xref: /openbmc/linux/sound/pci/rme96.c (revision 7a2f6f61)
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);
671 		if (rate > 0) {
672 			/* slave clock */
673 			return rate;
674 		}
675 	}
676 
677 	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
678 		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
679 	switch (rate) {
680 	case 1:
681 		rate = 32000;
682 		break;
683 	case 2:
684 		rate = 44100;
685 		break;
686 	case 3:
687 		rate = 48000;
688 		break;
689 	default:
690 		return -1;
691 	}
692 	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
693 }
694 
695 static int
696 snd_rme96_playback_setrate(struct rme96 *rme96,
697 			   int rate)
698 {
699 	int ds;
700 
701 	ds = rme96->wcreg & RME96_WCR_DS;
702 	switch (rate) {
703 	case 32000:
704 		rme96->wcreg &= ~RME96_WCR_DS;
705 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
706 			~RME96_WCR_FREQ_1;
707 		break;
708 	case 44100:
709 		rme96->wcreg &= ~RME96_WCR_DS;
710 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
711 			~RME96_WCR_FREQ_0;
712 		break;
713 	case 48000:
714 		rme96->wcreg &= ~RME96_WCR_DS;
715 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
716 			RME96_WCR_FREQ_1;
717 		break;
718 	case 64000:
719 		rme96->wcreg |= RME96_WCR_DS;
720 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
721 			~RME96_WCR_FREQ_1;
722 		break;
723 	case 88200:
724 		rme96->wcreg |= RME96_WCR_DS;
725 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
726 			~RME96_WCR_FREQ_0;
727 		break;
728 	case 96000:
729 		rme96->wcreg |= RME96_WCR_DS;
730 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
731 			RME96_WCR_FREQ_1;
732 		break;
733 	default:
734 		return -EINVAL;
735 	}
736 	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
737 	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
738 	{
739 		/* change to/from double-speed: reset the DAC (if available) */
740 		snd_rme96_reset_dac(rme96);
741 		return 1; /* need to restore volume */
742 	} else {
743 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
744 		return 0;
745 	}
746 }
747 
748 static int
749 snd_rme96_capture_analog_setrate(struct rme96 *rme96,
750 				 int rate)
751 {
752 	switch (rate) {
753 	case 32000:
754 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
755 			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
756 		break;
757 	case 44100:
758 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
759 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
760 		break;
761 	case 48000:
762 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
763 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
764 		break;
765 	case 64000:
766 		if (rme96->rev < 4) {
767 			return -EINVAL;
768 		}
769 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
770 			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
771 		break;
772 	case 88200:
773 		if (rme96->rev < 4) {
774 			return -EINVAL;
775 		}
776 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
777 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
778 		break;
779 	case 96000:
780 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
781 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
782 		break;
783 	default:
784 		return -EINVAL;
785 	}
786 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
787 	return 0;
788 }
789 
790 static int
791 snd_rme96_setclockmode(struct rme96 *rme96,
792 		       int mode)
793 {
794 	switch (mode) {
795 	case RME96_CLOCKMODE_SLAVE:
796 	        /* AutoSync */
797 		rme96->wcreg &= ~RME96_WCR_MASTER;
798 		rme96->areg &= ~RME96_AR_WSEL;
799 		break;
800 	case RME96_CLOCKMODE_MASTER:
801 	        /* Internal */
802 		rme96->wcreg |= RME96_WCR_MASTER;
803 		rme96->areg &= ~RME96_AR_WSEL;
804 		break;
805 	case RME96_CLOCKMODE_WORDCLOCK:
806 		/* Word clock is a master mode */
807 		rme96->wcreg |= RME96_WCR_MASTER;
808 		rme96->areg |= RME96_AR_WSEL;
809 		break;
810 	default:
811 		return -EINVAL;
812 	}
813 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
814 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
815 	return 0;
816 }
817 
818 static int
819 snd_rme96_getclockmode(struct rme96 *rme96)
820 {
821 	if (rme96->areg & RME96_AR_WSEL) {
822 		return RME96_CLOCKMODE_WORDCLOCK;
823 	}
824 	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
825 		RME96_CLOCKMODE_SLAVE;
826 }
827 
828 static int
829 snd_rme96_setinputtype(struct rme96 *rme96,
830 		       int type)
831 {
832 	int n;
833 
834 	switch (type) {
835 	case RME96_INPUT_OPTICAL:
836 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
837 			~RME96_WCR_INP_1;
838 		break;
839 	case RME96_INPUT_COAXIAL:
840 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
841 			~RME96_WCR_INP_1;
842 		break;
843 	case RME96_INPUT_INTERNAL:
844 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
845 			RME96_WCR_INP_1;
846 		break;
847 	case RME96_INPUT_XLR:
848 		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
849 		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
850 		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
851 		     rme96->rev > 4))
852 		{
853 			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
854 			return -EINVAL;
855 		}
856 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
857 			RME96_WCR_INP_1;
858 		break;
859 	case RME96_INPUT_ANALOG:
860 		if (!RME96_HAS_ANALOG_IN(rme96)) {
861 			return -EINVAL;
862 		}
863 		rme96->areg |= RME96_AR_ANALOG;
864 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
865 		if (rme96->rev < 4) {
866 			/*
867 			 * Revision less than 004 does not support 64 and
868 			 * 88.2 kHz
869 			 */
870 			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
871 				snd_rme96_capture_analog_setrate(rme96, 44100);
872 			}
873 			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
874 				snd_rme96_capture_analog_setrate(rme96, 32000);
875 			}
876 		}
877 		return 0;
878 	default:
879 		return -EINVAL;
880 	}
881 	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
882 		rme96->areg &= ~RME96_AR_ANALOG;
883 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
884 	}
885 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
886 	return 0;
887 }
888 
889 static int
890 snd_rme96_getinputtype(struct rme96 *rme96)
891 {
892 	if (rme96->areg & RME96_AR_ANALOG) {
893 		return RME96_INPUT_ANALOG;
894 	}
895 	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
896 		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
897 }
898 
899 static void
900 snd_rme96_setframelog(struct rme96 *rme96,
901 		      int n_channels,
902 		      int is_playback)
903 {
904 	int frlog;
905 
906 	if (n_channels == 2) {
907 		frlog = 1;
908 	} else {
909 		/* assume 8 channels */
910 		frlog = 3;
911 	}
912 	if (is_playback) {
913 		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
914 		rme96->playback_frlog = frlog;
915 	} else {
916 		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
917 		rme96->capture_frlog = frlog;
918 	}
919 }
920 
921 static int
922 snd_rme96_playback_setformat(struct rme96 *rme96, snd_pcm_format_t format)
923 {
924 	switch (format) {
925 	case SNDRV_PCM_FORMAT_S16_LE:
926 		rme96->wcreg &= ~RME96_WCR_MODE24;
927 		break;
928 	case SNDRV_PCM_FORMAT_S32_LE:
929 		rme96->wcreg |= RME96_WCR_MODE24;
930 		break;
931 	default:
932 		return -EINVAL;
933 	}
934 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
935 	return 0;
936 }
937 
938 static int
939 snd_rme96_capture_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_2;
944 		break;
945 	case SNDRV_PCM_FORMAT_S32_LE:
946 		rme96->wcreg |= RME96_WCR_MODE24_2;
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 void
956 snd_rme96_set_period_properties(struct rme96 *rme96,
957 				size_t period_bytes)
958 {
959 	switch (period_bytes) {
960 	case RME96_LARGE_BLOCK_SIZE:
961 		rme96->wcreg &= ~RME96_WCR_ISEL;
962 		break;
963 	case RME96_SMALL_BLOCK_SIZE:
964 		rme96->wcreg |= RME96_WCR_ISEL;
965 		break;
966 	default:
967 		snd_BUG();
968 		break;
969 	}
970 	rme96->wcreg &= ~RME96_WCR_IDIS;
971 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
972 }
973 
974 static int
975 snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
976 			     struct snd_pcm_hw_params *params)
977 {
978 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
979 	struct snd_pcm_runtime *runtime = substream->runtime;
980 	int err, rate, dummy;
981 	bool apply_dac_volume = false;
982 
983 	runtime->dma_area = (void __force *)(rme96->iobase +
984 					     RME96_IO_PLAY_BUFFER);
985 	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
986 	runtime->dma_bytes = RME96_BUFFER_SIZE;
987 
988 	spin_lock_irq(&rme96->lock);
989 	rate = 0;
990 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
991 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG)
992 		rate = snd_rme96_capture_getrate(rme96, &dummy);
993 	if (rate > 0) {
994                 /* slave clock */
995                 if ((int)params_rate(params) != rate) {
996 			err = -EIO;
997 			goto error;
998 		}
999 	} else {
1000 		err = snd_rme96_playback_setrate(rme96, params_rate(params));
1001 		if (err < 0)
1002 			goto error;
1003 		apply_dac_volume = err > 0; /* need to restore volume later? */
1004 	}
1005 
1006 	err = snd_rme96_playback_setformat(rme96, params_format(params));
1007 	if (err < 0)
1008 		goto error;
1009 	snd_rme96_setframelog(rme96, params_channels(params), 1);
1010 	if (rme96->capture_periodsize != 0) {
1011 		if (params_period_size(params) << rme96->playback_frlog !=
1012 		    rme96->capture_periodsize)
1013 		{
1014 			err = -EBUSY;
1015 			goto error;
1016 		}
1017 	}
1018 	rme96->playback_periodsize =
1019 		params_period_size(params) << rme96->playback_frlog;
1020 	snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
1021 	/* S/PDIF setup */
1022 	if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
1023 		rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
1024 		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1025 	}
1026 
1027 	err = 0;
1028  error:
1029 	spin_unlock_irq(&rme96->lock);
1030 	if (apply_dac_volume) {
1031 		usleep_range(3000, 10000);
1032 		snd_rme96_apply_dac_volume(rme96);
1033 	}
1034 
1035 	return err;
1036 }
1037 
1038 static int
1039 snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
1040 			    struct snd_pcm_hw_params *params)
1041 {
1042 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1043 	struct snd_pcm_runtime *runtime = substream->runtime;
1044 	int err, isadat, rate;
1045 
1046 	runtime->dma_area = (void __force *)(rme96->iobase +
1047 					     RME96_IO_REC_BUFFER);
1048 	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
1049 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1050 
1051 	spin_lock_irq(&rme96->lock);
1052 	err = snd_rme96_capture_setformat(rme96, params_format(params));
1053 	if (err < 0) {
1054 		spin_unlock_irq(&rme96->lock);
1055 		return err;
1056 	}
1057 	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1058 		err = snd_rme96_capture_analog_setrate(rme96, params_rate(params));
1059 		if (err < 0) {
1060 			spin_unlock_irq(&rme96->lock);
1061 			return err;
1062 		}
1063 	} else {
1064 		rate = snd_rme96_capture_getrate(rme96, &isadat);
1065 		if (rate > 0) {
1066 			if ((int)params_rate(params) != rate) {
1067 				spin_unlock_irq(&rme96->lock);
1068 				return -EIO;
1069 			}
1070 			if ((isadat && runtime->hw.channels_min == 2) ||
1071 			    (!isadat && runtime->hw.channels_min == 8)) {
1072 				spin_unlock_irq(&rme96->lock);
1073 				return -EIO;
1074 			}
1075 		}
1076         }
1077 	snd_rme96_setframelog(rme96, params_channels(params), 0);
1078 	if (rme96->playback_periodsize != 0) {
1079 		if (params_period_size(params) << rme96->capture_frlog !=
1080 		    rme96->playback_periodsize)
1081 		{
1082 			spin_unlock_irq(&rme96->lock);
1083 			return -EBUSY;
1084 		}
1085 	}
1086 	rme96->capture_periodsize =
1087 		params_period_size(params) << rme96->capture_frlog;
1088 	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
1089 	spin_unlock_irq(&rme96->lock);
1090 
1091 	return 0;
1092 }
1093 
1094 static void
1095 snd_rme96_trigger(struct rme96 *rme96,
1096 		  int op)
1097 {
1098 	if (op & RME96_TB_RESET_PLAYPOS)
1099 		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1100 	if (op & RME96_TB_RESET_CAPTUREPOS)
1101 		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1102 	if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) {
1103 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1104 		if (rme96->rcreg & RME96_RCR_IRQ)
1105 			writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1106 	}
1107 	if (op & RME96_TB_CLEAR_CAPTURE_IRQ) {
1108 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1109 		if (rme96->rcreg & RME96_RCR_IRQ_2)
1110 			writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1111 	}
1112 	if (op & RME96_TB_START_PLAYBACK)
1113 		rme96->wcreg |= RME96_WCR_START;
1114 	if (op & RME96_TB_STOP_PLAYBACK)
1115 		rme96->wcreg &= ~RME96_WCR_START;
1116 	if (op & RME96_TB_START_CAPTURE)
1117 		rme96->wcreg |= RME96_WCR_START_2;
1118 	if (op & RME96_TB_STOP_CAPTURE)
1119 		rme96->wcreg &= ~RME96_WCR_START_2;
1120 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1121 }
1122 
1123 
1124 
1125 static irqreturn_t
1126 snd_rme96_interrupt(int irq,
1127 		    void *dev_id)
1128 {
1129 	struct rme96 *rme96 = (struct rme96 *)dev_id;
1130 
1131 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1132 	/* fastpath out, to ease interrupt sharing */
1133 	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
1134 	      (rme96->rcreg & RME96_RCR_IRQ_2)))
1135 	{
1136 		return IRQ_NONE;
1137 	}
1138 
1139 	if (rme96->rcreg & RME96_RCR_IRQ) {
1140 		/* playback */
1141                 snd_pcm_period_elapsed(rme96->playback_substream);
1142 		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1143 	}
1144 	if (rme96->rcreg & RME96_RCR_IRQ_2) {
1145 		/* capture */
1146 		snd_pcm_period_elapsed(rme96->capture_substream);
1147 		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1148 	}
1149 	return IRQ_HANDLED;
1150 }
1151 
1152 static const unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };
1153 
1154 static const struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {
1155 	.count = ARRAY_SIZE(period_bytes),
1156 	.list = period_bytes,
1157 	.mask = 0
1158 };
1159 
1160 static void
1161 rme96_set_buffer_size_constraint(struct rme96 *rme96,
1162 				 struct snd_pcm_runtime *runtime)
1163 {
1164 	unsigned int size;
1165 
1166 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1167 				     RME96_BUFFER_SIZE);
1168 	size = rme96->playback_periodsize;
1169 	if (!size)
1170 		size = rme96->capture_periodsize;
1171 	if (size)
1172 		snd_pcm_hw_constraint_single(runtime,
1173 					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1174 					     size);
1175 	else
1176 		snd_pcm_hw_constraint_list(runtime, 0,
1177 					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1178 					   &hw_constraints_period_bytes);
1179 }
1180 
1181 static int
1182 snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
1183 {
1184         int rate, dummy;
1185 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1186 	struct snd_pcm_runtime *runtime = substream->runtime;
1187 
1188 	snd_pcm_set_sync(substream);
1189 	spin_lock_irq(&rme96->lock);
1190 	if (rme96->playback_substream) {
1191 		spin_unlock_irq(&rme96->lock);
1192                 return -EBUSY;
1193         }
1194 	rme96->wcreg &= ~RME96_WCR_ADAT;
1195 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1196 	rme96->playback_substream = substream;
1197 	spin_unlock_irq(&rme96->lock);
1198 
1199 	runtime->hw = snd_rme96_playback_spdif_info;
1200 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1201 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1202 		rate = snd_rme96_capture_getrate(rme96, &dummy);
1203 		if (rate > 0) {
1204 			/* slave clock */
1205 			runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1206 			runtime->hw.rate_min = rate;
1207 			runtime->hw.rate_max = rate;
1208 		}
1209 	}
1210 	rme96_set_buffer_size_constraint(rme96, runtime);
1211 
1212 	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
1213 	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1214 	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1215 		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1216 	return 0;
1217 }
1218 
1219 static int
1220 snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
1221 {
1222         int isadat, rate;
1223 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1224 	struct snd_pcm_runtime *runtime = substream->runtime;
1225 
1226 	snd_pcm_set_sync(substream);
1227 	runtime->hw = snd_rme96_capture_spdif_info;
1228 	if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1229 		rate = snd_rme96_capture_getrate(rme96, &isadat);
1230 		if (rate > 0) {
1231 			if (isadat)
1232 				return -EIO;
1233 			runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1234 			runtime->hw.rate_min = rate;
1235 			runtime->hw.rate_max = rate;
1236 		}
1237 	}
1238 
1239 	spin_lock_irq(&rme96->lock);
1240 	if (rme96->capture_substream) {
1241 		spin_unlock_irq(&rme96->lock);
1242                 return -EBUSY;
1243         }
1244 	rme96->capture_substream = substream;
1245 	spin_unlock_irq(&rme96->lock);
1246 
1247 	rme96_set_buffer_size_constraint(rme96, runtime);
1248 	return 0;
1249 }
1250 
1251 static int
1252 snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
1253 {
1254         int rate, dummy;
1255 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1256 	struct snd_pcm_runtime *runtime = substream->runtime;
1257 
1258 	snd_pcm_set_sync(substream);
1259 	spin_lock_irq(&rme96->lock);
1260 	if (rme96->playback_substream) {
1261 		spin_unlock_irq(&rme96->lock);
1262                 return -EBUSY;
1263         }
1264 	rme96->wcreg |= RME96_WCR_ADAT;
1265 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1266 	rme96->playback_substream = substream;
1267 	spin_unlock_irq(&rme96->lock);
1268 
1269 	runtime->hw = snd_rme96_playback_adat_info;
1270 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1271 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1272 		rate = snd_rme96_capture_getrate(rme96, &dummy);
1273 		if (rate > 0) {
1274 			/* slave clock */
1275 			runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1276 			runtime->hw.rate_min = rate;
1277 			runtime->hw.rate_max = rate;
1278 		}
1279 	}
1280 
1281 	rme96_set_buffer_size_constraint(rme96, runtime);
1282 	return 0;
1283 }
1284 
1285 static int
1286 snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
1287 {
1288         int isadat, rate;
1289 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1290 	struct snd_pcm_runtime *runtime = substream->runtime;
1291 
1292 	snd_pcm_set_sync(substream);
1293 	runtime->hw = snd_rme96_capture_adat_info;
1294         if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1295                 /* makes no sense to use analog input. Note that analog
1296                    expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
1297                 return -EIO;
1298         }
1299 	rate = snd_rme96_capture_getrate(rme96, &isadat);
1300 	if (rate > 0) {
1301                 if (!isadat) {
1302                         return -EIO;
1303                 }
1304                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1305                 runtime->hw.rate_min = rate;
1306                 runtime->hw.rate_max = rate;
1307         }
1308 
1309 	spin_lock_irq(&rme96->lock);
1310 	if (rme96->capture_substream) {
1311 		spin_unlock_irq(&rme96->lock);
1312                 return -EBUSY;
1313         }
1314 	rme96->capture_substream = substream;
1315 	spin_unlock_irq(&rme96->lock);
1316 
1317 	rme96_set_buffer_size_constraint(rme96, runtime);
1318 	return 0;
1319 }
1320 
1321 static int
1322 snd_rme96_playback_close(struct snd_pcm_substream *substream)
1323 {
1324 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1325 	int spdif = 0;
1326 
1327 	spin_lock_irq(&rme96->lock);
1328 	if (RME96_ISPLAYING(rme96)) {
1329 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1330 	}
1331 	rme96->playback_substream = NULL;
1332 	rme96->playback_periodsize = 0;
1333 	spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
1334 	spin_unlock_irq(&rme96->lock);
1335 	if (spdif) {
1336 		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1337 		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1338 			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1339 	}
1340 	return 0;
1341 }
1342 
1343 static int
1344 snd_rme96_capture_close(struct snd_pcm_substream *substream)
1345 {
1346 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1347 
1348 	spin_lock_irq(&rme96->lock);
1349 	if (RME96_ISRECORDING(rme96)) {
1350 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1351 	}
1352 	rme96->capture_substream = NULL;
1353 	rme96->capture_periodsize = 0;
1354 	spin_unlock_irq(&rme96->lock);
1355 	return 0;
1356 }
1357 
1358 static int
1359 snd_rme96_playback_prepare(struct snd_pcm_substream *substream)
1360 {
1361 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1362 
1363 	spin_lock_irq(&rme96->lock);
1364 	if (RME96_ISPLAYING(rme96)) {
1365 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1366 	}
1367 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1368 	spin_unlock_irq(&rme96->lock);
1369 	return 0;
1370 }
1371 
1372 static int
1373 snd_rme96_capture_prepare(struct snd_pcm_substream *substream)
1374 {
1375 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1376 
1377 	spin_lock_irq(&rme96->lock);
1378 	if (RME96_ISRECORDING(rme96)) {
1379 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1380 	}
1381 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1382 	spin_unlock_irq(&rme96->lock);
1383 	return 0;
1384 }
1385 
1386 static int
1387 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
1388 			   int cmd)
1389 {
1390 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1391 	struct snd_pcm_substream *s;
1392 	bool sync;
1393 
1394 	snd_pcm_group_for_each_entry(s, substream) {
1395 		if (snd_pcm_substream_chip(s) == rme96)
1396 			snd_pcm_trigger_done(s, substream);
1397 	}
1398 
1399 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1400 	       (rme96->playback_substream->group ==
1401 		rme96->capture_substream->group);
1402 
1403 	switch (cmd) {
1404 	case SNDRV_PCM_TRIGGER_START:
1405 		if (!RME96_ISPLAYING(rme96)) {
1406 			if (substream != rme96->playback_substream)
1407 				return -EBUSY;
1408 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1409 						 : RME96_START_PLAYBACK);
1410 		}
1411 		break;
1412 
1413 	case SNDRV_PCM_TRIGGER_SUSPEND:
1414 	case SNDRV_PCM_TRIGGER_STOP:
1415 		if (RME96_ISPLAYING(rme96)) {
1416 			if (substream != rme96->playback_substream)
1417 				return -EBUSY;
1418 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1419 						 :  RME96_STOP_PLAYBACK);
1420 		}
1421 		break;
1422 
1423 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1424 		if (RME96_ISPLAYING(rme96))
1425 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1426 						 : RME96_STOP_PLAYBACK);
1427 		break;
1428 
1429 	case SNDRV_PCM_TRIGGER_RESUME:
1430 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1431 		if (!RME96_ISPLAYING(rme96))
1432 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1433 						 : RME96_RESUME_PLAYBACK);
1434 		break;
1435 
1436 	default:
1437 		return -EINVAL;
1438 	}
1439 
1440 	return 0;
1441 }
1442 
1443 static int
1444 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
1445 			  int cmd)
1446 {
1447 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1448 	struct snd_pcm_substream *s;
1449 	bool sync;
1450 
1451 	snd_pcm_group_for_each_entry(s, substream) {
1452 		if (snd_pcm_substream_chip(s) == rme96)
1453 			snd_pcm_trigger_done(s, substream);
1454 	}
1455 
1456 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1457 	       (rme96->playback_substream->group ==
1458 		rme96->capture_substream->group);
1459 
1460 	switch (cmd) {
1461 	case SNDRV_PCM_TRIGGER_START:
1462 		if (!RME96_ISRECORDING(rme96)) {
1463 			if (substream != rme96->capture_substream)
1464 				return -EBUSY;
1465 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1466 						 : RME96_START_CAPTURE);
1467 		}
1468 		break;
1469 
1470 	case SNDRV_PCM_TRIGGER_SUSPEND:
1471 	case SNDRV_PCM_TRIGGER_STOP:
1472 		if (RME96_ISRECORDING(rme96)) {
1473 			if (substream != rme96->capture_substream)
1474 				return -EBUSY;
1475 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1476 						 : RME96_STOP_CAPTURE);
1477 		}
1478 		break;
1479 
1480 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1481 		if (RME96_ISRECORDING(rme96))
1482 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1483 						 : RME96_STOP_CAPTURE);
1484 		break;
1485 
1486 	case SNDRV_PCM_TRIGGER_RESUME:
1487 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1488 		if (!RME96_ISRECORDING(rme96))
1489 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1490 						 : RME96_RESUME_CAPTURE);
1491 		break;
1492 
1493 	default:
1494 		return -EINVAL;
1495 	}
1496 
1497 	return 0;
1498 }
1499 
1500 static snd_pcm_uframes_t
1501 snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
1502 {
1503 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1504 	return snd_rme96_playback_ptr(rme96);
1505 }
1506 
1507 static snd_pcm_uframes_t
1508 snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
1509 {
1510 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1511 	return snd_rme96_capture_ptr(rme96);
1512 }
1513 
1514 static const struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
1515 	.open =		snd_rme96_playback_spdif_open,
1516 	.close =	snd_rme96_playback_close,
1517 	.hw_params =	snd_rme96_playback_hw_params,
1518 	.prepare =	snd_rme96_playback_prepare,
1519 	.trigger =	snd_rme96_playback_trigger,
1520 	.pointer =	snd_rme96_playback_pointer,
1521 	.copy_user =	snd_rme96_playback_copy,
1522 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1523 	.fill_silence =	snd_rme96_playback_silence,
1524 	.mmap =		snd_pcm_lib_mmap_iomem,
1525 };
1526 
1527 static const struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
1528 	.open =		snd_rme96_capture_spdif_open,
1529 	.close =	snd_rme96_capture_close,
1530 	.hw_params =	snd_rme96_capture_hw_params,
1531 	.prepare =	snd_rme96_capture_prepare,
1532 	.trigger =	snd_rme96_capture_trigger,
1533 	.pointer =	snd_rme96_capture_pointer,
1534 	.copy_user =	snd_rme96_capture_copy,
1535 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1536 	.mmap =		snd_pcm_lib_mmap_iomem,
1537 };
1538 
1539 static const struct snd_pcm_ops snd_rme96_playback_adat_ops = {
1540 	.open =		snd_rme96_playback_adat_open,
1541 	.close =	snd_rme96_playback_close,
1542 	.hw_params =	snd_rme96_playback_hw_params,
1543 	.prepare =	snd_rme96_playback_prepare,
1544 	.trigger =	snd_rme96_playback_trigger,
1545 	.pointer =	snd_rme96_playback_pointer,
1546 	.copy_user =	snd_rme96_playback_copy,
1547 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1548 	.fill_silence =	snd_rme96_playback_silence,
1549 	.mmap =		snd_pcm_lib_mmap_iomem,
1550 };
1551 
1552 static const struct snd_pcm_ops snd_rme96_capture_adat_ops = {
1553 	.open =		snd_rme96_capture_adat_open,
1554 	.close =	snd_rme96_capture_close,
1555 	.hw_params =	snd_rme96_capture_hw_params,
1556 	.prepare =	snd_rme96_capture_prepare,
1557 	.trigger =	snd_rme96_capture_trigger,
1558 	.pointer =	snd_rme96_capture_pointer,
1559 	.copy_user =	snd_rme96_capture_copy,
1560 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1561 	.mmap =		snd_pcm_lib_mmap_iomem,
1562 };
1563 
1564 static void
1565 snd_rme96_free(struct rme96 *rme96)
1566 {
1567 	if (rme96->irq >= 0) {
1568 		snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1569 		rme96->areg &= ~RME96_AR_DAC_EN;
1570 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1571 	}
1572 #ifdef CONFIG_PM_SLEEP
1573 	vfree(rme96->playback_suspend_buffer);
1574 	vfree(rme96->capture_suspend_buffer);
1575 #endif
1576 }
1577 
1578 static void
1579 snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
1580 {
1581 	struct rme96 *rme96 = pcm->private_data;
1582 	rme96->spdif_pcm = NULL;
1583 }
1584 
1585 static void
1586 snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
1587 {
1588 	struct rme96 *rme96 = pcm->private_data;
1589 	rme96->adat_pcm = NULL;
1590 }
1591 
1592 static int
1593 snd_rme96_create(struct rme96 *rme96)
1594 {
1595 	struct pci_dev *pci = rme96->pci;
1596 	int err;
1597 
1598 	rme96->irq = -1;
1599 	spin_lock_init(&rme96->lock);
1600 
1601 	err = pcim_enable_device(pci);
1602 	if (err < 0)
1603 		return err;
1604 
1605 	err = pci_request_regions(pci, "RME96");
1606 	if (err < 0)
1607 		return err;
1608 	rme96->port = pci_resource_start(rme96->pci, 0);
1609 
1610 	rme96->iobase = devm_ioremap(&pci->dev, rme96->port, RME96_IO_SIZE);
1611 	if (!rme96->iobase) {
1612 		dev_err(rme96->card->dev,
1613 			"unable to remap memory region 0x%lx-0x%lx\n",
1614 			rme96->port, rme96->port + RME96_IO_SIZE - 1);
1615 		return -EBUSY;
1616 	}
1617 
1618 	if (devm_request_irq(&pci->dev, pci->irq, snd_rme96_interrupt,
1619 			     IRQF_SHARED, KBUILD_MODNAME, rme96)) {
1620 		dev_err(rme96->card->dev, "unable to grab IRQ %d\n", pci->irq);
1621 		return -EBUSY;
1622 	}
1623 	rme96->irq = pci->irq;
1624 	rme96->card->sync_irq = rme96->irq;
1625 
1626 	/* read the card's revision number */
1627 	pci_read_config_byte(pci, 8, &rme96->rev);
1628 
1629 	/* set up ALSA pcm device for S/PDIF */
1630 	err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
1631 			  1, 1, &rme96->spdif_pcm);
1632 	if (err < 0)
1633 		return err;
1634 
1635 	rme96->spdif_pcm->private_data = rme96;
1636 	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
1637 	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
1638 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
1639 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
1640 
1641 	rme96->spdif_pcm->info_flags = 0;
1642 
1643 	/* set up ALSA pcm device for ADAT */
1644 	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
1645 		/* ADAT is not available on the base model */
1646 		rme96->adat_pcm = NULL;
1647 	} else {
1648 		err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
1649 				  1, 1, &rme96->adat_pcm);
1650 		if (err < 0)
1651 			return err;
1652 		rme96->adat_pcm->private_data = rme96;
1653 		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
1654 		strcpy(rme96->adat_pcm->name, "Digi96 ADAT");
1655 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
1656 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
1657 
1658 		rme96->adat_pcm->info_flags = 0;
1659 	}
1660 
1661 	rme96->playback_periodsize = 0;
1662 	rme96->capture_periodsize = 0;
1663 
1664 	/* make sure playback/capture is stopped, if by some reason active */
1665 	snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1666 
1667 	/* set default values in registers */
1668 	rme96->wcreg =
1669 		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
1670 		RME96_WCR_SEL |    /* normal playback */
1671 		RME96_WCR_MASTER | /* set to master clock mode */
1672 		RME96_WCR_INP_0;   /* set coaxial input */
1673 
1674 	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */
1675 
1676 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1677 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1678 
1679 	/* reset the ADC */
1680 	writel(rme96->areg | RME96_AR_PD2,
1681 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
1682 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1683 
1684 	/* reset and enable the DAC (order is important). */
1685 	snd_rme96_reset_dac(rme96);
1686 	rme96->areg |= RME96_AR_DAC_EN;
1687 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1688 
1689 	/* reset playback and record buffer pointers */
1690 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1691 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1692 
1693 	/* reset volume */
1694 	rme96->vol[0] = rme96->vol[1] = 0;
1695 	if (RME96_HAS_ANALOG_OUT(rme96)) {
1696 		snd_rme96_apply_dac_volume(rme96);
1697 	}
1698 
1699 	/* init switch interface */
1700 	err = snd_rme96_create_switches(rme96->card, rme96);
1701 	if (err < 0)
1702 		return err;
1703 
1704         /* init proc interface */
1705 	snd_rme96_proc_init(rme96);
1706 
1707 	return 0;
1708 }
1709 
1710 /*
1711  * proc interface
1712  */
1713 
1714 static void
1715 snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1716 {
1717 	int n;
1718 	struct rme96 *rme96 = entry->private_data;
1719 
1720 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1721 
1722 	snd_iprintf(buffer, rme96->card->longname);
1723 	snd_iprintf(buffer, " (index #%d)\n", rme96->card->number + 1);
1724 
1725 	snd_iprintf(buffer, "\nGeneral settings\n");
1726 	if (rme96->wcreg & RME96_WCR_IDIS) {
1727 		snd_iprintf(buffer, "  period size: N/A (interrupts "
1728 			    "disabled)\n");
1729 	} else if (rme96->wcreg & RME96_WCR_ISEL) {
1730 		snd_iprintf(buffer, "  period size: 2048 bytes\n");
1731 	} else {
1732 		snd_iprintf(buffer, "  period size: 8192 bytes\n");
1733 	}
1734 	snd_iprintf(buffer, "\nInput settings\n");
1735 	switch (snd_rme96_getinputtype(rme96)) {
1736 	case RME96_INPUT_OPTICAL:
1737 		snd_iprintf(buffer, "  input: optical");
1738 		break;
1739 	case RME96_INPUT_COAXIAL:
1740 		snd_iprintf(buffer, "  input: coaxial");
1741 		break;
1742 	case RME96_INPUT_INTERNAL:
1743 		snd_iprintf(buffer, "  input: internal");
1744 		break;
1745 	case RME96_INPUT_XLR:
1746 		snd_iprintf(buffer, "  input: XLR");
1747 		break;
1748 	case RME96_INPUT_ANALOG:
1749 		snd_iprintf(buffer, "  input: analog");
1750 		break;
1751 	}
1752 	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1753 		snd_iprintf(buffer, "\n  sample rate: no valid signal\n");
1754 	} else {
1755 		if (n) {
1756 			snd_iprintf(buffer, " (8 channels)\n");
1757 		} else {
1758 			snd_iprintf(buffer, " (2 channels)\n");
1759 		}
1760 		snd_iprintf(buffer, "  sample rate: %d Hz\n",
1761 			    snd_rme96_capture_getrate(rme96, &n));
1762 	}
1763 	if (rme96->wcreg & RME96_WCR_MODE24_2) {
1764 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1765 	} else {
1766 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1767 	}
1768 
1769 	snd_iprintf(buffer, "\nOutput settings\n");
1770 	if (rme96->wcreg & RME96_WCR_SEL) {
1771 		snd_iprintf(buffer, "  output signal: normal playback\n");
1772 	} else {
1773 		snd_iprintf(buffer, "  output signal: same as input\n");
1774 	}
1775 	snd_iprintf(buffer, "  sample rate: %d Hz\n",
1776 		    snd_rme96_playback_getrate(rme96));
1777 	if (rme96->wcreg & RME96_WCR_MODE24) {
1778 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1779 	} else {
1780 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1781 	}
1782 	if (rme96->areg & RME96_AR_WSEL) {
1783 		snd_iprintf(buffer, "  sample clock source: word clock\n");
1784 	} else if (rme96->wcreg & RME96_WCR_MASTER) {
1785 		snd_iprintf(buffer, "  sample clock source: internal\n");
1786 	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1787 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)\n");
1788 	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1789 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)\n");
1790 	} else {
1791 		snd_iprintf(buffer, "  sample clock source: autosync\n");
1792 	}
1793 	if (rme96->wcreg & RME96_WCR_PRO) {
1794 		snd_iprintf(buffer, "  format: AES/EBU (professional)\n");
1795 	} else {
1796 		snd_iprintf(buffer, "  format: IEC958 (consumer)\n");
1797 	}
1798 	if (rme96->wcreg & RME96_WCR_EMP) {
1799 		snd_iprintf(buffer, "  emphasis: on\n");
1800 	} else {
1801 		snd_iprintf(buffer, "  emphasis: off\n");
1802 	}
1803 	if (rme96->wcreg & RME96_WCR_DOLBY) {
1804 		snd_iprintf(buffer, "  non-audio (dolby): on\n");
1805 	} else {
1806 		snd_iprintf(buffer, "  non-audio (dolby): off\n");
1807 	}
1808 	if (RME96_HAS_ANALOG_IN(rme96)) {
1809 		snd_iprintf(buffer, "\nAnalog output settings\n");
1810 		switch (snd_rme96_getmontracks(rme96)) {
1811 		case RME96_MONITOR_TRACKS_1_2:
1812 			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2\n");
1813 			break;
1814 		case RME96_MONITOR_TRACKS_3_4:
1815 			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4\n");
1816 			break;
1817 		case RME96_MONITOR_TRACKS_5_6:
1818 			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6\n");
1819 			break;
1820 		case RME96_MONITOR_TRACKS_7_8:
1821 			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8\n");
1822 			break;
1823 		}
1824 		switch (snd_rme96_getattenuation(rme96)) {
1825 		case RME96_ATTENUATION_0:
1826 			snd_iprintf(buffer, "  attenuation: 0 dB\n");
1827 			break;
1828 		case RME96_ATTENUATION_6:
1829 			snd_iprintf(buffer, "  attenuation: -6 dB\n");
1830 			break;
1831 		case RME96_ATTENUATION_12:
1832 			snd_iprintf(buffer, "  attenuation: -12 dB\n");
1833 			break;
1834 		case RME96_ATTENUATION_18:
1835 			snd_iprintf(buffer, "  attenuation: -18 dB\n");
1836 			break;
1837 		}
1838 		snd_iprintf(buffer, "  volume left: %u\n", rme96->vol[0]);
1839 		snd_iprintf(buffer, "  volume right: %u\n", rme96->vol[1]);
1840 	}
1841 }
1842 
1843 static void snd_rme96_proc_init(struct rme96 *rme96)
1844 {
1845 	snd_card_ro_proc_new(rme96->card, "rme96", rme96, snd_rme96_proc_read);
1846 }
1847 
1848 /*
1849  * control interface
1850  */
1851 
1852 #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info
1853 
1854 static int
1855 snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1856 {
1857 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1858 
1859 	spin_lock_irq(&rme96->lock);
1860 	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
1861 	spin_unlock_irq(&rme96->lock);
1862 	return 0;
1863 }
1864 static int
1865 snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1866 {
1867 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1868 	unsigned int val;
1869 	int change;
1870 
1871 	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
1872 	spin_lock_irq(&rme96->lock);
1873 	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
1874 	change = val != rme96->wcreg;
1875 	rme96->wcreg = val;
1876 	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1877 	spin_unlock_irq(&rme96->lock);
1878 	return change;
1879 }
1880 
1881 static int
1882 snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1883 {
1884 	static const char * const _texts[5] = {
1885 		"Optical", "Coaxial", "Internal", "XLR", "Analog"
1886 	};
1887 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1888 	const char *texts[5] = {
1889 		_texts[0], _texts[1], _texts[2], _texts[3], _texts[4]
1890 	};
1891 	int num_items;
1892 
1893 	switch (rme96->pci->device) {
1894 	case PCI_DEVICE_ID_RME_DIGI96:
1895 	case PCI_DEVICE_ID_RME_DIGI96_8:
1896 		num_items = 3;
1897 		break;
1898 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1899 		num_items = 4;
1900 		break;
1901 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1902 		if (rme96->rev > 4) {
1903 			/* PST */
1904 			num_items = 4;
1905 			texts[3] = _texts[4]; /* Analog instead of XLR */
1906 		} else {
1907 			/* PAD */
1908 			num_items = 5;
1909 		}
1910 		break;
1911 	default:
1912 		snd_BUG();
1913 		return -EINVAL;
1914 	}
1915 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
1916 }
1917 static int
1918 snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1919 {
1920 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1921 	unsigned int items = 3;
1922 
1923 	spin_lock_irq(&rme96->lock);
1924 	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
1925 
1926 	switch (rme96->pci->device) {
1927 	case PCI_DEVICE_ID_RME_DIGI96:
1928 	case PCI_DEVICE_ID_RME_DIGI96_8:
1929 		items = 3;
1930 		break;
1931 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1932 		items = 4;
1933 		break;
1934 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1935 		if (rme96->rev > 4) {
1936 			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
1937 			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
1938 				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
1939 			}
1940 			items = 4;
1941 		} else {
1942 			items = 5;
1943 		}
1944 		break;
1945 	default:
1946 		snd_BUG();
1947 		break;
1948 	}
1949 	if (ucontrol->value.enumerated.item[0] >= items) {
1950 		ucontrol->value.enumerated.item[0] = items - 1;
1951 	}
1952 
1953 	spin_unlock_irq(&rme96->lock);
1954 	return 0;
1955 }
1956 static int
1957 snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1958 {
1959 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1960 	unsigned int val;
1961 	int change, items = 3;
1962 
1963 	switch (rme96->pci->device) {
1964 	case PCI_DEVICE_ID_RME_DIGI96:
1965 	case PCI_DEVICE_ID_RME_DIGI96_8:
1966 		items = 3;
1967 		break;
1968 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1969 		items = 4;
1970 		break;
1971 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1972 		if (rme96->rev > 4) {
1973 			items = 4;
1974 		} else {
1975 			items = 5;
1976 		}
1977 		break;
1978 	default:
1979 		snd_BUG();
1980 		break;
1981 	}
1982 	val = ucontrol->value.enumerated.item[0] % items;
1983 
1984 	/* special case for PST */
1985 	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {
1986 		if (val == RME96_INPUT_XLR) {
1987 			val = RME96_INPUT_ANALOG;
1988 		}
1989 	}
1990 
1991 	spin_lock_irq(&rme96->lock);
1992 	change = (int)val != snd_rme96_getinputtype(rme96);
1993 	snd_rme96_setinputtype(rme96, val);
1994 	spin_unlock_irq(&rme96->lock);
1995 	return change;
1996 }
1997 
1998 static int
1999 snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2000 {
2001 	static const char * const texts[3] = { "AutoSync", "Internal", "Word" };
2002 
2003 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
2004 }
2005 static int
2006 snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2007 {
2008 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2009 
2010 	spin_lock_irq(&rme96->lock);
2011 	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
2012 	spin_unlock_irq(&rme96->lock);
2013 	return 0;
2014 }
2015 static int
2016 snd_rme96_put_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2017 {
2018 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2019 	unsigned int val;
2020 	int change;
2021 
2022 	val = ucontrol->value.enumerated.item[0] % 3;
2023 	spin_lock_irq(&rme96->lock);
2024 	change = (int)val != snd_rme96_getclockmode(rme96);
2025 	snd_rme96_setclockmode(rme96, val);
2026 	spin_unlock_irq(&rme96->lock);
2027 	return change;
2028 }
2029 
2030 static int
2031 snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2032 {
2033 	static const char * const texts[4] = {
2034 		"0 dB", "-6 dB", "-12 dB", "-18 dB"
2035 	};
2036 
2037 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2038 }
2039 static int
2040 snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2041 {
2042 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2043 
2044 	spin_lock_irq(&rme96->lock);
2045 	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
2046 	spin_unlock_irq(&rme96->lock);
2047 	return 0;
2048 }
2049 static int
2050 snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2051 {
2052 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2053 	unsigned int val;
2054 	int change;
2055 
2056 	val = ucontrol->value.enumerated.item[0] % 4;
2057 	spin_lock_irq(&rme96->lock);
2058 
2059 	change = (int)val != snd_rme96_getattenuation(rme96);
2060 	snd_rme96_setattenuation(rme96, val);
2061 	spin_unlock_irq(&rme96->lock);
2062 	return change;
2063 }
2064 
2065 static int
2066 snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2067 {
2068 	static const char * const texts[4] = { "1+2", "3+4", "5+6", "7+8" };
2069 
2070 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2071 }
2072 static int
2073 snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2074 {
2075 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2076 
2077 	spin_lock_irq(&rme96->lock);
2078 	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
2079 	spin_unlock_irq(&rme96->lock);
2080 	return 0;
2081 }
2082 static int
2083 snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2084 {
2085 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2086 	unsigned int val;
2087 	int change;
2088 
2089 	val = ucontrol->value.enumerated.item[0] % 4;
2090 	spin_lock_irq(&rme96->lock);
2091 	change = (int)val != snd_rme96_getmontracks(rme96);
2092 	snd_rme96_setmontracks(rme96, val);
2093 	spin_unlock_irq(&rme96->lock);
2094 	return change;
2095 }
2096 
2097 static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)
2098 {
2099 	u32 val = 0;
2100 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
2101 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
2102 	if (val & RME96_WCR_PRO)
2103 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2104 	else
2105 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2106 	return val;
2107 }
2108 
2109 static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
2110 {
2111 	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
2112 			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
2113 	if (val & RME96_WCR_PRO)
2114 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
2115 	else
2116 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
2117 }
2118 
2119 static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2120 {
2121 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2122 	uinfo->count = 1;
2123 	return 0;
2124 }
2125 
2126 static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2127 {
2128 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2129 
2130 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
2131 	return 0;
2132 }
2133 
2134 static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2135 {
2136 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2137 	int change;
2138 	u32 val;
2139 
2140 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2141 	spin_lock_irq(&rme96->lock);
2142 	change = val != rme96->wcreg_spdif;
2143 	rme96->wcreg_spdif = val;
2144 	spin_unlock_irq(&rme96->lock);
2145 	return change;
2146 }
2147 
2148 static int snd_rme96_control_spdif_stream_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_stream_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_stream);
2160 	return 0;
2161 }
2162 
2163 static int snd_rme96_control_spdif_stream_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_stream;
2172 	rme96->wcreg_spdif_stream = val;
2173 	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
2174 	rme96->wcreg |= val;
2175 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
2176 	spin_unlock_irq(&rme96->lock);
2177 	return change;
2178 }
2179 
2180 static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2181 {
2182 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2183 	uinfo->count = 1;
2184 	return 0;
2185 }
2186 
2187 static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2188 {
2189 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
2190 	return 0;
2191 }
2192 
2193 static int
2194 snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2195 {
2196 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2197 
2198         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2199         uinfo->count = 2;
2200         uinfo->value.integer.min = 0;
2201 	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
2202         return 0;
2203 }
2204 
2205 static int
2206 snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2207 {
2208 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2209 
2210 	spin_lock_irq(&rme96->lock);
2211         u->value.integer.value[0] = rme96->vol[0];
2212         u->value.integer.value[1] = rme96->vol[1];
2213 	spin_unlock_irq(&rme96->lock);
2214 
2215         return 0;
2216 }
2217 
2218 static int
2219 snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2220 {
2221 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2222         int change = 0;
2223 	unsigned int vol, maxvol;
2224 
2225 
2226 	if (!RME96_HAS_ANALOG_OUT(rme96))
2227 		return -EINVAL;
2228 	maxvol = RME96_185X_MAX_OUT(rme96);
2229 	spin_lock_irq(&rme96->lock);
2230 	vol = u->value.integer.value[0];
2231 	if (vol != rme96->vol[0] && vol <= maxvol) {
2232 		rme96->vol[0] = vol;
2233 		change = 1;
2234 	}
2235 	vol = u->value.integer.value[1];
2236 	if (vol != rme96->vol[1] && vol <= maxvol) {
2237 		rme96->vol[1] = vol;
2238 		change = 1;
2239 	}
2240 	if (change)
2241 		snd_rme96_apply_dac_volume(rme96);
2242 	spin_unlock_irq(&rme96->lock);
2243 
2244         return change;
2245 }
2246 
2247 static const struct snd_kcontrol_new snd_rme96_controls[] = {
2248 {
2249 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2250 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2251 	.info =		snd_rme96_control_spdif_info,
2252 	.get =		snd_rme96_control_spdif_get,
2253 	.put =		snd_rme96_control_spdif_put
2254 },
2255 {
2256 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2257 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2258 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2259 	.info =		snd_rme96_control_spdif_stream_info,
2260 	.get =		snd_rme96_control_spdif_stream_get,
2261 	.put =		snd_rme96_control_spdif_stream_put
2262 },
2263 {
2264 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2265 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2266 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
2267 	.info =		snd_rme96_control_spdif_mask_info,
2268 	.get =		snd_rme96_control_spdif_mask_get,
2269 	.private_value = IEC958_AES0_NONAUDIO |
2270 			IEC958_AES0_PROFESSIONAL |
2271 			IEC958_AES0_CON_EMPHASIS
2272 },
2273 {
2274 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2275 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2276 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
2277 	.info =		snd_rme96_control_spdif_mask_info,
2278 	.get =		snd_rme96_control_spdif_mask_get,
2279 	.private_value = IEC958_AES0_NONAUDIO |
2280 			IEC958_AES0_PROFESSIONAL |
2281 			IEC958_AES0_PRO_EMPHASIS
2282 },
2283 {
2284         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2285 	.name =         "Input Connector",
2286 	.info =         snd_rme96_info_inputtype_control,
2287 	.get =          snd_rme96_get_inputtype_control,
2288 	.put =          snd_rme96_put_inputtype_control
2289 },
2290 {
2291         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2292 	.name =         "Loopback Input",
2293 	.info =         snd_rme96_info_loopback_control,
2294 	.get =          snd_rme96_get_loopback_control,
2295 	.put =          snd_rme96_put_loopback_control
2296 },
2297 {
2298         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2299 	.name =         "Sample Clock Source",
2300 	.info =         snd_rme96_info_clockmode_control,
2301 	.get =          snd_rme96_get_clockmode_control,
2302 	.put =          snd_rme96_put_clockmode_control
2303 },
2304 {
2305         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2306 	.name =         "Monitor Tracks",
2307 	.info =         snd_rme96_info_montracks_control,
2308 	.get =          snd_rme96_get_montracks_control,
2309 	.put =          snd_rme96_put_montracks_control
2310 },
2311 {
2312         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2313 	.name =         "Attenuation",
2314 	.info =         snd_rme96_info_attenuation_control,
2315 	.get =          snd_rme96_get_attenuation_control,
2316 	.put =          snd_rme96_put_attenuation_control
2317 },
2318 {
2319         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2320 	.name =         "DAC Playback Volume",
2321 	.info =         snd_rme96_dac_volume_info,
2322 	.get =          snd_rme96_dac_volume_get,
2323 	.put =          snd_rme96_dac_volume_put
2324 }
2325 };
2326 
2327 static int
2328 snd_rme96_create_switches(struct snd_card *card,
2329 			  struct rme96 *rme96)
2330 {
2331 	int idx, err;
2332 	struct snd_kcontrol *kctl;
2333 
2334 	for (idx = 0; idx < 7; idx++) {
2335 		kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96);
2336 		err = snd_ctl_add(card, kctl);
2337 		if (err < 0)
2338 			return err;
2339 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
2340 			rme96->spdif_ctl = kctl;
2341 	}
2342 
2343 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2344 		for (idx = 7; idx < 10; idx++) {
2345 			err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96));
2346 			if (err < 0)
2347 				return err;
2348 		}
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_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2450 				sizeof(*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 		return err;
2460 
2461 #ifdef CONFIG_PM_SLEEP
2462 	rme96->playback_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2463 	if (!rme96->playback_suspend_buffer)
2464 		return -ENOMEM;
2465 	rme96->capture_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2466 	if (!rme96->capture_suspend_buffer)
2467 		return -ENOMEM;
2468 #endif
2469 
2470 	strcpy(card->driver, "Digi96");
2471 	switch (rme96->pci->device) {
2472 	case PCI_DEVICE_ID_RME_DIGI96:
2473 		strcpy(card->shortname, "RME Digi96");
2474 		break;
2475 	case PCI_DEVICE_ID_RME_DIGI96_8:
2476 		strcpy(card->shortname, "RME Digi96/8");
2477 		break;
2478 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
2479 		strcpy(card->shortname, "RME Digi96/8 PRO");
2480 		break;
2481 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2482 		pci_read_config_byte(rme96->pci, 8, &val);
2483 		if (val < 5) {
2484 			strcpy(card->shortname, "RME Digi96/8 PAD");
2485 		} else {
2486 			strcpy(card->shortname, "RME Digi96/8 PST");
2487 		}
2488 		break;
2489 	}
2490 	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
2491 		rme96->port, rme96->irq);
2492 	err = snd_card_register(card);
2493 	if (err)
2494 		return err;
2495 
2496 	pci_set_drvdata(pci, card);
2497 	dev++;
2498 	return 0;
2499 }
2500 
2501 static int snd_rme96_probe(struct pci_dev *pci,
2502 			   const struct pci_device_id *pci_id)
2503 {
2504 	return snd_card_free_on_error(&pci->dev, __snd_rme96_probe(pci, pci_id));
2505 }
2506 
2507 static struct pci_driver rme96_driver = {
2508 	.name = KBUILD_MODNAME,
2509 	.id_table = snd_rme96_ids,
2510 	.probe = snd_rme96_probe,
2511 	.driver = {
2512 		.pm = RME96_PM_OPS,
2513 	},
2514 };
2515 
2516 module_pci_driver(rme96_driver);
2517