xref: /openbmc/linux/sound/pci/rme96.c (revision c819e2cf)
1 /*
2  *   ALSA driver for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST audio
3  *   interfaces
4  *
5  *	Copyright (c) 2000, 2001 Anders Torger <torger@ludd.luth.se>
6  *
7  *      Thanks to Henk Hesselink <henk@anda.nl> for the analog volume control
8  *      code.
9  *
10  *   This program is free software; you can redistribute it and/or modify
11  *   it under the terms of the GNU General Public License as published by
12  *   the Free Software Foundation; either version 2 of the License, or
13  *   (at your option) any later version.
14  *
15  *   This program is distributed in the hope that it will be useful,
16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *   GNU General Public License for more details.
19  *
20  *   You should have received a copy of the GNU General Public License
21  *   along with this program; if not, write to the Free Software
22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23  *
24  */
25 
26 #include <linux/delay.h>
27 #include <linux/init.h>
28 #include <linux/interrupt.h>
29 #include <linux/pci.h>
30 #include <linux/module.h>
31 #include <linux/vmalloc.h>
32 
33 #include <sound/core.h>
34 #include <sound/info.h>
35 #include <sound/control.h>
36 #include <sound/pcm.h>
37 #include <sound/pcm_params.h>
38 #include <sound/asoundef.h>
39 #include <sound/initval.h>
40 
41 #include <asm/io.h>
42 
43 /* note, two last pcis should be equal, it is not a bug */
44 
45 MODULE_AUTHOR("Anders Torger <torger@ludd.luth.se>");
46 MODULE_DESCRIPTION("RME Digi96, Digi96/8, Digi96/8 PRO, Digi96/8 PST, "
47 		   "Digi96/8 PAD");
48 MODULE_LICENSE("GPL");
49 MODULE_SUPPORTED_DEVICE("{{RME,Digi96},"
50 		"{RME,Digi96/8},"
51 		"{RME,Digi96/8 PRO},"
52 		"{RME,Digi96/8 PST},"
53 		"{RME,Digi96/8 PAD}}");
54 
55 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
56 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
57 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
58 
59 module_param_array(index, int, NULL, 0444);
60 MODULE_PARM_DESC(index, "Index value for RME Digi96 soundcard.");
61 module_param_array(id, charp, NULL, 0444);
62 MODULE_PARM_DESC(id, "ID string for RME Digi96 soundcard.");
63 module_param_array(enable, bool, NULL, 0444);
64 MODULE_PARM_DESC(enable, "Enable RME Digi96 soundcard.");
65 
66 /*
67  * Defines for RME Digi96 series, from internal RME reference documents
68  * dated 12.01.00
69  */
70 
71 #define RME96_SPDIF_NCHANNELS 2
72 
73 /* Playback and capture buffer size */
74 #define RME96_BUFFER_SIZE 0x10000
75 
76 /* IO area size */
77 #define RME96_IO_SIZE 0x60000
78 
79 /* IO area offsets */
80 #define RME96_IO_PLAY_BUFFER      0x0
81 #define RME96_IO_REC_BUFFER       0x10000
82 #define RME96_IO_CONTROL_REGISTER 0x20000
83 #define RME96_IO_ADDITIONAL_REG   0x20004
84 #define RME96_IO_CONFIRM_PLAY_IRQ 0x20008
85 #define RME96_IO_CONFIRM_REC_IRQ  0x2000C
86 #define RME96_IO_SET_PLAY_POS     0x40000
87 #define RME96_IO_RESET_PLAY_POS   0x4FFFC
88 #define RME96_IO_SET_REC_POS      0x50000
89 #define RME96_IO_RESET_REC_POS    0x5FFFC
90 #define RME96_IO_GET_PLAY_POS     0x20000
91 #define RME96_IO_GET_REC_POS      0x30000
92 
93 /* Write control register bits */
94 #define RME96_WCR_START     (1 << 0)
95 #define RME96_WCR_START_2   (1 << 1)
96 #define RME96_WCR_GAIN_0    (1 << 2)
97 #define RME96_WCR_GAIN_1    (1 << 3)
98 #define RME96_WCR_MODE24    (1 << 4)
99 #define RME96_WCR_MODE24_2  (1 << 5)
100 #define RME96_WCR_BM        (1 << 6)
101 #define RME96_WCR_BM_2      (1 << 7)
102 #define RME96_WCR_ADAT      (1 << 8)
103 #define RME96_WCR_FREQ_0    (1 << 9)
104 #define RME96_WCR_FREQ_1    (1 << 10)
105 #define RME96_WCR_DS        (1 << 11)
106 #define RME96_WCR_PRO       (1 << 12)
107 #define RME96_WCR_EMP       (1 << 13)
108 #define RME96_WCR_SEL       (1 << 14)
109 #define RME96_WCR_MASTER    (1 << 15)
110 #define RME96_WCR_PD        (1 << 16)
111 #define RME96_WCR_INP_0     (1 << 17)
112 #define RME96_WCR_INP_1     (1 << 18)
113 #define RME96_WCR_THRU_0    (1 << 19)
114 #define RME96_WCR_THRU_1    (1 << 20)
115 #define RME96_WCR_THRU_2    (1 << 21)
116 #define RME96_WCR_THRU_3    (1 << 22)
117 #define RME96_WCR_THRU_4    (1 << 23)
118 #define RME96_WCR_THRU_5    (1 << 24)
119 #define RME96_WCR_THRU_6    (1 << 25)
120 #define RME96_WCR_THRU_7    (1 << 26)
121 #define RME96_WCR_DOLBY     (1 << 27)
122 #define RME96_WCR_MONITOR_0 (1 << 28)
123 #define RME96_WCR_MONITOR_1 (1 << 29)
124 #define RME96_WCR_ISEL      (1 << 30)
125 #define RME96_WCR_IDIS      (1 << 31)
126 
127 #define RME96_WCR_BITPOS_GAIN_0 2
128 #define RME96_WCR_BITPOS_GAIN_1 3
129 #define RME96_WCR_BITPOS_FREQ_0 9
130 #define RME96_WCR_BITPOS_FREQ_1 10
131 #define RME96_WCR_BITPOS_INP_0 17
132 #define RME96_WCR_BITPOS_INP_1 18
133 #define RME96_WCR_BITPOS_MONITOR_0 28
134 #define RME96_WCR_BITPOS_MONITOR_1 29
135 
136 /* Read control register bits */
137 #define RME96_RCR_AUDIO_ADDR_MASK 0xFFFF
138 #define RME96_RCR_IRQ_2     (1 << 16)
139 #define RME96_RCR_T_OUT     (1 << 17)
140 #define RME96_RCR_DEV_ID_0  (1 << 21)
141 #define RME96_RCR_DEV_ID_1  (1 << 22)
142 #define RME96_RCR_LOCK      (1 << 23)
143 #define RME96_RCR_VERF      (1 << 26)
144 #define RME96_RCR_F0        (1 << 27)
145 #define RME96_RCR_F1        (1 << 28)
146 #define RME96_RCR_F2        (1 << 29)
147 #define RME96_RCR_AUTOSYNC  (1 << 30)
148 #define RME96_RCR_IRQ       (1 << 31)
149 
150 #define RME96_RCR_BITPOS_F0 27
151 #define RME96_RCR_BITPOS_F1 28
152 #define RME96_RCR_BITPOS_F2 29
153 
154 /* Additional register bits */
155 #define RME96_AR_WSEL       (1 << 0)
156 #define RME96_AR_ANALOG     (1 << 1)
157 #define RME96_AR_FREQPAD_0  (1 << 2)
158 #define RME96_AR_FREQPAD_1  (1 << 3)
159 #define RME96_AR_FREQPAD_2  (1 << 4)
160 #define RME96_AR_PD2        (1 << 5)
161 #define RME96_AR_DAC_EN     (1 << 6)
162 #define RME96_AR_CLATCH     (1 << 7)
163 #define RME96_AR_CCLK       (1 << 8)
164 #define RME96_AR_CDATA      (1 << 9)
165 
166 #define RME96_AR_BITPOS_F0 2
167 #define RME96_AR_BITPOS_F1 3
168 #define RME96_AR_BITPOS_F2 4
169 
170 /* Monitor tracks */
171 #define RME96_MONITOR_TRACKS_1_2 0
172 #define RME96_MONITOR_TRACKS_3_4 1
173 #define RME96_MONITOR_TRACKS_5_6 2
174 #define RME96_MONITOR_TRACKS_7_8 3
175 
176 /* Attenuation */
177 #define RME96_ATTENUATION_0 0
178 #define RME96_ATTENUATION_6 1
179 #define RME96_ATTENUATION_12 2
180 #define RME96_ATTENUATION_18 3
181 
182 /* Input types */
183 #define RME96_INPUT_OPTICAL 0
184 #define RME96_INPUT_COAXIAL 1
185 #define RME96_INPUT_INTERNAL 2
186 #define RME96_INPUT_XLR 3
187 #define RME96_INPUT_ANALOG 4
188 
189 /* Clock modes */
190 #define RME96_CLOCKMODE_SLAVE 0
191 #define RME96_CLOCKMODE_MASTER 1
192 #define RME96_CLOCKMODE_WORDCLOCK 2
193 
194 /* Block sizes in bytes */
195 #define RME96_SMALL_BLOCK_SIZE 2048
196 #define RME96_LARGE_BLOCK_SIZE 8192
197 
198 /* Volume control */
199 #define RME96_AD1852_VOL_BITS 14
200 #define RME96_AD1855_VOL_BITS 10
201 
202 /* Defines for snd_rme96_trigger */
203 #define RME96_TB_START_PLAYBACK 1
204 #define RME96_TB_START_CAPTURE 2
205 #define RME96_TB_STOP_PLAYBACK 4
206 #define RME96_TB_STOP_CAPTURE 8
207 #define RME96_TB_RESET_PLAYPOS 16
208 #define RME96_TB_RESET_CAPTUREPOS 32
209 #define RME96_TB_CLEAR_PLAYBACK_IRQ 64
210 #define RME96_TB_CLEAR_CAPTURE_IRQ 128
211 #define RME96_RESUME_PLAYBACK	(RME96_TB_START_PLAYBACK)
212 #define RME96_RESUME_CAPTURE	(RME96_TB_START_CAPTURE)
213 #define RME96_RESUME_BOTH	(RME96_RESUME_PLAYBACK \
214 				| RME96_RESUME_CAPTURE)
215 #define RME96_START_PLAYBACK	(RME96_TB_START_PLAYBACK \
216 				| RME96_TB_RESET_PLAYPOS)
217 #define RME96_START_CAPTURE	(RME96_TB_START_CAPTURE \
218 				| RME96_TB_RESET_CAPTUREPOS)
219 #define RME96_START_BOTH	(RME96_START_PLAYBACK \
220 				| RME96_START_CAPTURE)
221 #define RME96_STOP_PLAYBACK	(RME96_TB_STOP_PLAYBACK \
222 				| RME96_TB_CLEAR_PLAYBACK_IRQ)
223 #define RME96_STOP_CAPTURE	(RME96_TB_STOP_CAPTURE \
224 				| RME96_TB_CLEAR_CAPTURE_IRQ)
225 #define RME96_STOP_BOTH		(RME96_STOP_PLAYBACK \
226 				| RME96_STOP_CAPTURE)
227 
228 struct rme96 {
229 	spinlock_t    lock;
230 	int irq;
231 	unsigned long port;
232 	void __iomem *iobase;
233 
234 	u32 wcreg;    /* cached write control register value */
235 	u32 wcreg_spdif;		/* S/PDIF setup */
236 	u32 wcreg_spdif_stream;		/* S/PDIF setup (temporary) */
237 	u32 rcreg;    /* cached read control register value */
238 	u32 areg;     /* cached additional register value */
239 	u16 vol[2]; /* cached volume of analog output */
240 
241 	u8 rev; /* card revision number */
242 
243 #ifdef CONFIG_PM_SLEEP
244 	u32 playback_pointer;
245 	u32 capture_pointer;
246 	void *playback_suspend_buffer;
247 	void *capture_suspend_buffer;
248 #endif
249 
250 	struct snd_pcm_substream *playback_substream;
251 	struct snd_pcm_substream *capture_substream;
252 
253 	int playback_frlog; /* log2 of framesize */
254 	int capture_frlog;
255 
256         size_t playback_periodsize; /* in bytes, zero if not used */
257 	size_t capture_periodsize; /* in bytes, zero if not used */
258 
259 	struct snd_card *card;
260 	struct snd_pcm *spdif_pcm;
261 	struct snd_pcm *adat_pcm;
262 	struct pci_dev     *pci;
263 	struct snd_kcontrol   *spdif_ctl;
264 };
265 
266 static const struct pci_device_id snd_rme96_ids[] = {
267 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96), 0, },
268 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8), 0, },
269 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PRO), 0, },
270 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST), 0, },
271 	{ 0, }
272 };
273 
274 MODULE_DEVICE_TABLE(pci, snd_rme96_ids);
275 
276 #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
277 #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)
278 #define	RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
279 #define	RME96_HAS_ANALOG_OUT(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO || \
280 				     (rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
281 #define	RME96_DAC_IS_1852(rme96) (RME96_HAS_ANALOG_OUT(rme96) && (rme96)->rev >= 4)
282 #define	RME96_DAC_IS_1855(rme96) (((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && (rme96)->rev < 4) || \
283 			          ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO && (rme96)->rev == 2))
284 #define	RME96_185X_MAX_OUT(rme96) ((1 << (RME96_DAC_IS_1852(rme96) ? RME96_AD1852_VOL_BITS : RME96_AD1855_VOL_BITS)) - 1)
285 
286 static int
287 snd_rme96_playback_prepare(struct snd_pcm_substream *substream);
288 
289 static int
290 snd_rme96_capture_prepare(struct snd_pcm_substream *substream);
291 
292 static int
293 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
294 			   int cmd);
295 
296 static int
297 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
298 			  int cmd);
299 
300 static snd_pcm_uframes_t
301 snd_rme96_playback_pointer(struct snd_pcm_substream *substream);
302 
303 static snd_pcm_uframes_t
304 snd_rme96_capture_pointer(struct snd_pcm_substream *substream);
305 
306 static void snd_rme96_proc_init(struct rme96 *rme96);
307 
308 static int
309 snd_rme96_create_switches(struct snd_card *card,
310 			  struct rme96 *rme96);
311 
312 static int
313 snd_rme96_getinputtype(struct rme96 *rme96);
314 
315 static inline unsigned int
316 snd_rme96_playback_ptr(struct rme96 *rme96)
317 {
318 	return (readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
319 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->playback_frlog;
320 }
321 
322 static inline unsigned int
323 snd_rme96_capture_ptr(struct rme96 *rme96)
324 {
325 	return (readl(rme96->iobase + RME96_IO_GET_REC_POS)
326 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->capture_frlog;
327 }
328 
329 static int
330 snd_rme96_playback_silence(struct snd_pcm_substream *substream,
331 			   int channel, /* not used (interleaved data) */
332 			   snd_pcm_uframes_t pos,
333 			   snd_pcm_uframes_t count)
334 {
335 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
336 	count <<= rme96->playback_frlog;
337 	pos <<= rme96->playback_frlog;
338 	memset_io(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
339 		  0, count);
340 	return 0;
341 }
342 
343 static int
344 snd_rme96_playback_copy(struct snd_pcm_substream *substream,
345 			int channel, /* not used (interleaved data) */
346 			snd_pcm_uframes_t pos,
347 			void __user *src,
348 			snd_pcm_uframes_t count)
349 {
350 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
351 	count <<= rme96->playback_frlog;
352 	pos <<= rme96->playback_frlog;
353 	return copy_from_user_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos, src,
354 				   count);
355 }
356 
357 static int
358 snd_rme96_capture_copy(struct snd_pcm_substream *substream,
359 		       int channel, /* not used (interleaved data) */
360 		       snd_pcm_uframes_t pos,
361 		       void __user *dst,
362 		       snd_pcm_uframes_t count)
363 {
364 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
365 	count <<= rme96->capture_frlog;
366 	pos <<= rme96->capture_frlog;
367 	return copy_to_user_fromio(dst, rme96->iobase + RME96_IO_REC_BUFFER + pos,
368 				   count);
369 }
370 
371 /*
372  * Digital output capabilities (S/PDIF)
373  */
374 static struct snd_pcm_hardware snd_rme96_playback_spdif_info =
375 {
376 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
377 			      SNDRV_PCM_INFO_MMAP_VALID |
378 			      SNDRV_PCM_INFO_SYNC_START |
379 			      SNDRV_PCM_INFO_RESUME |
380 			      SNDRV_PCM_INFO_INTERLEAVED |
381 			      SNDRV_PCM_INFO_PAUSE),
382 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
383 			      SNDRV_PCM_FMTBIT_S32_LE),
384 	.rates =	     (SNDRV_PCM_RATE_32000 |
385 			      SNDRV_PCM_RATE_44100 |
386 			      SNDRV_PCM_RATE_48000 |
387 			      SNDRV_PCM_RATE_64000 |
388 			      SNDRV_PCM_RATE_88200 |
389 			      SNDRV_PCM_RATE_96000),
390 	.rate_min =	     32000,
391 	.rate_max =	     96000,
392 	.channels_min =	     2,
393 	.channels_max =	     2,
394 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
395 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
396 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
397 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
398 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
399 	.fifo_size =	     0,
400 };
401 
402 /*
403  * Digital input capabilities (S/PDIF)
404  */
405 static struct snd_pcm_hardware snd_rme96_capture_spdif_info =
406 {
407 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
408 			      SNDRV_PCM_INFO_MMAP_VALID |
409 			      SNDRV_PCM_INFO_SYNC_START |
410 			      SNDRV_PCM_INFO_RESUME |
411 			      SNDRV_PCM_INFO_INTERLEAVED |
412 			      SNDRV_PCM_INFO_PAUSE),
413 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
414 			      SNDRV_PCM_FMTBIT_S32_LE),
415 	.rates =	     (SNDRV_PCM_RATE_32000 |
416 			      SNDRV_PCM_RATE_44100 |
417 			      SNDRV_PCM_RATE_48000 |
418 			      SNDRV_PCM_RATE_64000 |
419 			      SNDRV_PCM_RATE_88200 |
420 			      SNDRV_PCM_RATE_96000),
421 	.rate_min =	     32000,
422 	.rate_max =	     96000,
423 	.channels_min =	     2,
424 	.channels_max =	     2,
425 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
426 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
427 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
428 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
429 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
430 	.fifo_size =	     0,
431 };
432 
433 /*
434  * Digital output capabilities (ADAT)
435  */
436 static struct snd_pcm_hardware snd_rme96_playback_adat_info =
437 {
438 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
439 			      SNDRV_PCM_INFO_MMAP_VALID |
440 			      SNDRV_PCM_INFO_SYNC_START |
441 			      SNDRV_PCM_INFO_RESUME |
442 			      SNDRV_PCM_INFO_INTERLEAVED |
443 			      SNDRV_PCM_INFO_PAUSE),
444 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
445 			      SNDRV_PCM_FMTBIT_S32_LE),
446 	.rates =             (SNDRV_PCM_RATE_44100 |
447 			      SNDRV_PCM_RATE_48000),
448 	.rate_min =          44100,
449 	.rate_max =          48000,
450 	.channels_min =      8,
451 	.channels_max =	     8,
452 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
453 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
454 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
455 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
456 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
457 	.fifo_size =	     0,
458 };
459 
460 /*
461  * Digital input capabilities (ADAT)
462  */
463 static struct snd_pcm_hardware snd_rme96_capture_adat_info =
464 {
465 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
466 			      SNDRV_PCM_INFO_MMAP_VALID |
467 			      SNDRV_PCM_INFO_SYNC_START |
468 			      SNDRV_PCM_INFO_RESUME |
469 			      SNDRV_PCM_INFO_INTERLEAVED |
470 			      SNDRV_PCM_INFO_PAUSE),
471 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
472 			      SNDRV_PCM_FMTBIT_S32_LE),
473 	.rates =	     (SNDRV_PCM_RATE_44100 |
474 			      SNDRV_PCM_RATE_48000),
475 	.rate_min =          44100,
476 	.rate_max =          48000,
477 	.channels_min =      8,
478 	.channels_max =	     8,
479 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
480 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
481 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
482 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
483 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
484 	.fifo_size =         0,
485 };
486 
487 /*
488  * The CDATA, CCLK and CLATCH bits can be used to write to the SPI interface
489  * of the AD1852 or AD1852 D/A converter on the board.  CDATA must be set up
490  * on the falling edge of CCLK and be stable on the rising edge.  The rising
491  * edge of CLATCH after the last data bit clocks in the whole data word.
492  * A fast processor could probably drive the SPI interface faster than the
493  * DAC can handle (3MHz for the 1855, unknown for the 1852).  The udelay(1)
494  * limits the data rate to 500KHz and only causes a delay of 33 microsecs.
495  *
496  * NOTE: increased delay from 1 to 10, since there where problems setting
497  * the volume.
498  */
499 static void
500 snd_rme96_write_SPI(struct rme96 *rme96, u16 val)
501 {
502 	int i;
503 
504 	for (i = 0; i < 16; i++) {
505 		if (val & 0x8000) {
506 			rme96->areg |= RME96_AR_CDATA;
507 		} else {
508 			rme96->areg &= ~RME96_AR_CDATA;
509 		}
510 		rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CLATCH);
511 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
512 		udelay(10);
513 		rme96->areg |= RME96_AR_CCLK;
514 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
515 		udelay(10);
516 		val <<= 1;
517 	}
518 	rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CDATA);
519 	rme96->areg |= RME96_AR_CLATCH;
520 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
521 	udelay(10);
522 	rme96->areg &= ~RME96_AR_CLATCH;
523 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
524 }
525 
526 static void
527 snd_rme96_apply_dac_volume(struct rme96 *rme96)
528 {
529 	if (RME96_DAC_IS_1852(rme96)) {
530 		snd_rme96_write_SPI(rme96, (rme96->vol[0] << 2) | 0x0);
531 		snd_rme96_write_SPI(rme96, (rme96->vol[1] << 2) | 0x2);
532 	} else if (RME96_DAC_IS_1855(rme96)) {
533 		snd_rme96_write_SPI(rme96, (rme96->vol[0] & 0x3FF) | 0x000);
534 		snd_rme96_write_SPI(rme96, (rme96->vol[1] & 0x3FF) | 0x400);
535 	}
536 }
537 
538 static void
539 snd_rme96_reset_dac(struct rme96 *rme96)
540 {
541 	writel(rme96->wcreg | RME96_WCR_PD,
542 	       rme96->iobase + RME96_IO_CONTROL_REGISTER);
543 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
544 }
545 
546 static int
547 snd_rme96_getmontracks(struct rme96 *rme96)
548 {
549 	return ((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_0) & 1) +
550 		(((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_1) & 1) << 1);
551 }
552 
553 static int
554 snd_rme96_setmontracks(struct rme96 *rme96,
555 		       int montracks)
556 {
557 	if (montracks & 1) {
558 		rme96->wcreg |= RME96_WCR_MONITOR_0;
559 	} else {
560 		rme96->wcreg &= ~RME96_WCR_MONITOR_0;
561 	}
562 	if (montracks & 2) {
563 		rme96->wcreg |= RME96_WCR_MONITOR_1;
564 	} else {
565 		rme96->wcreg &= ~RME96_WCR_MONITOR_1;
566 	}
567 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
568 	return 0;
569 }
570 
571 static int
572 snd_rme96_getattenuation(struct rme96 *rme96)
573 {
574 	return ((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_0) & 1) +
575 		(((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_1) & 1) << 1);
576 }
577 
578 static int
579 snd_rme96_setattenuation(struct rme96 *rme96,
580 			 int attenuation)
581 {
582 	switch (attenuation) {
583 	case 0:
584 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) &
585 			~RME96_WCR_GAIN_1;
586 		break;
587 	case 1:
588 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) &
589 			~RME96_WCR_GAIN_1;
590 		break;
591 	case 2:
592 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) |
593 			RME96_WCR_GAIN_1;
594 		break;
595 	case 3:
596 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) |
597 			RME96_WCR_GAIN_1;
598 		break;
599 	default:
600 		return -EINVAL;
601 	}
602 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
603 	return 0;
604 }
605 
606 static int
607 snd_rme96_capture_getrate(struct rme96 *rme96,
608 			  int *is_adat)
609 {
610 	int n, rate;
611 
612 	*is_adat = 0;
613 	if (rme96->areg & RME96_AR_ANALOG) {
614 		/* Analog input, overrides S/PDIF setting */
615 		n = ((rme96->areg >> RME96_AR_BITPOS_F0) & 1) +
616 			(((rme96->areg >> RME96_AR_BITPOS_F1) & 1) << 1);
617 		switch (n) {
618 		case 1:
619 			rate = 32000;
620 			break;
621 		case 2:
622 			rate = 44100;
623 			break;
624 		case 3:
625 			rate = 48000;
626 			break;
627 		default:
628 			return -1;
629 		}
630 		return (rme96->areg & RME96_AR_BITPOS_F2) ? rate << 1 : rate;
631 	}
632 
633 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
634 	if (rme96->rcreg & RME96_RCR_LOCK) {
635 		/* ADAT rate */
636 		*is_adat = 1;
637 		if (rme96->rcreg & RME96_RCR_T_OUT) {
638 			return 48000;
639 		}
640 		return 44100;
641 	}
642 
643 	if (rme96->rcreg & RME96_RCR_VERF) {
644 		return -1;
645 	}
646 
647 	/* S/PDIF rate */
648 	n = ((rme96->rcreg >> RME96_RCR_BITPOS_F0) & 1) +
649 		(((rme96->rcreg >> RME96_RCR_BITPOS_F1) & 1) << 1) +
650 		(((rme96->rcreg >> RME96_RCR_BITPOS_F2) & 1) << 2);
651 
652 	switch (n) {
653 	case 0:
654 		if (rme96->rcreg & RME96_RCR_T_OUT) {
655 			return 64000;
656 		}
657 		return -1;
658 	case 3: return 96000;
659 	case 4: return 88200;
660 	case 5: return 48000;
661 	case 6: return 44100;
662 	case 7: return 32000;
663 	default:
664 		break;
665 	}
666 	return -1;
667 }
668 
669 static int
670 snd_rme96_playback_getrate(struct rme96 *rme96)
671 {
672 	int rate, dummy;
673 
674 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
675             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
676 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
677 	{
678 	        /* slave clock */
679 	        return rate;
680 	}
681 	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
682 		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
683 	switch (rate) {
684 	case 1:
685 		rate = 32000;
686 		break;
687 	case 2:
688 		rate = 44100;
689 		break;
690 	case 3:
691 		rate = 48000;
692 		break;
693 	default:
694 		return -1;
695 	}
696 	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
697 }
698 
699 static int
700 snd_rme96_playback_setrate(struct rme96 *rme96,
701 			   int rate)
702 {
703 	int ds;
704 
705 	ds = rme96->wcreg & RME96_WCR_DS;
706 	switch (rate) {
707 	case 32000:
708 		rme96->wcreg &= ~RME96_WCR_DS;
709 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
710 			~RME96_WCR_FREQ_1;
711 		break;
712 	case 44100:
713 		rme96->wcreg &= ~RME96_WCR_DS;
714 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
715 			~RME96_WCR_FREQ_0;
716 		break;
717 	case 48000:
718 		rme96->wcreg &= ~RME96_WCR_DS;
719 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
720 			RME96_WCR_FREQ_1;
721 		break;
722 	case 64000:
723 		rme96->wcreg |= RME96_WCR_DS;
724 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
725 			~RME96_WCR_FREQ_1;
726 		break;
727 	case 88200:
728 		rme96->wcreg |= RME96_WCR_DS;
729 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
730 			~RME96_WCR_FREQ_0;
731 		break;
732 	case 96000:
733 		rme96->wcreg |= RME96_WCR_DS;
734 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
735 			RME96_WCR_FREQ_1;
736 		break;
737 	default:
738 		return -EINVAL;
739 	}
740 	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
741 	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
742 	{
743 		/* change to/from double-speed: reset the DAC (if available) */
744 		snd_rme96_reset_dac(rme96);
745 	} else {
746 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
747 	}
748 	return 0;
749 }
750 
751 static int
752 snd_rme96_capture_analog_setrate(struct rme96 *rme96,
753 				 int rate)
754 {
755 	switch (rate) {
756 	case 32000:
757 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
758 			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
759 		break;
760 	case 44100:
761 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
762 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
763 		break;
764 	case 48000:
765 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
766 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
767 		break;
768 	case 64000:
769 		if (rme96->rev < 4) {
770 			return -EINVAL;
771 		}
772 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
773 			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
774 		break;
775 	case 88200:
776 		if (rme96->rev < 4) {
777 			return -EINVAL;
778 		}
779 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
780 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
781 		break;
782 	case 96000:
783 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
784 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
785 		break;
786 	default:
787 		return -EINVAL;
788 	}
789 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
790 	return 0;
791 }
792 
793 static int
794 snd_rme96_setclockmode(struct rme96 *rme96,
795 		       int mode)
796 {
797 	switch (mode) {
798 	case RME96_CLOCKMODE_SLAVE:
799 	        /* AutoSync */
800 		rme96->wcreg &= ~RME96_WCR_MASTER;
801 		rme96->areg &= ~RME96_AR_WSEL;
802 		break;
803 	case RME96_CLOCKMODE_MASTER:
804 	        /* Internal */
805 		rme96->wcreg |= RME96_WCR_MASTER;
806 		rme96->areg &= ~RME96_AR_WSEL;
807 		break;
808 	case RME96_CLOCKMODE_WORDCLOCK:
809 		/* Word clock is a master mode */
810 		rme96->wcreg |= RME96_WCR_MASTER;
811 		rme96->areg |= RME96_AR_WSEL;
812 		break;
813 	default:
814 		return -EINVAL;
815 	}
816 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
817 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
818 	return 0;
819 }
820 
821 static int
822 snd_rme96_getclockmode(struct rme96 *rme96)
823 {
824 	if (rme96->areg & RME96_AR_WSEL) {
825 		return RME96_CLOCKMODE_WORDCLOCK;
826 	}
827 	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
828 		RME96_CLOCKMODE_SLAVE;
829 }
830 
831 static int
832 snd_rme96_setinputtype(struct rme96 *rme96,
833 		       int type)
834 {
835 	int n;
836 
837 	switch (type) {
838 	case RME96_INPUT_OPTICAL:
839 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
840 			~RME96_WCR_INP_1;
841 		break;
842 	case RME96_INPUT_COAXIAL:
843 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
844 			~RME96_WCR_INP_1;
845 		break;
846 	case RME96_INPUT_INTERNAL:
847 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
848 			RME96_WCR_INP_1;
849 		break;
850 	case RME96_INPUT_XLR:
851 		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
852 		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
853 		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
854 		     rme96->rev > 4))
855 		{
856 			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
857 			return -EINVAL;
858 		}
859 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
860 			RME96_WCR_INP_1;
861 		break;
862 	case RME96_INPUT_ANALOG:
863 		if (!RME96_HAS_ANALOG_IN(rme96)) {
864 			return -EINVAL;
865 		}
866 		rme96->areg |= RME96_AR_ANALOG;
867 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
868 		if (rme96->rev < 4) {
869 			/*
870 			 * Revision less than 004 does not support 64 and
871 			 * 88.2 kHz
872 			 */
873 			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
874 				snd_rme96_capture_analog_setrate(rme96, 44100);
875 			}
876 			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
877 				snd_rme96_capture_analog_setrate(rme96, 32000);
878 			}
879 		}
880 		return 0;
881 	default:
882 		return -EINVAL;
883 	}
884 	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
885 		rme96->areg &= ~RME96_AR_ANALOG;
886 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
887 	}
888 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
889 	return 0;
890 }
891 
892 static int
893 snd_rme96_getinputtype(struct rme96 *rme96)
894 {
895 	if (rme96->areg & RME96_AR_ANALOG) {
896 		return RME96_INPUT_ANALOG;
897 	}
898 	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
899 		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
900 }
901 
902 static void
903 snd_rme96_setframelog(struct rme96 *rme96,
904 		      int n_channels,
905 		      int is_playback)
906 {
907 	int frlog;
908 
909 	if (n_channels == 2) {
910 		frlog = 1;
911 	} else {
912 		/* assume 8 channels */
913 		frlog = 3;
914 	}
915 	if (is_playback) {
916 		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
917 		rme96->playback_frlog = frlog;
918 	} else {
919 		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
920 		rme96->capture_frlog = frlog;
921 	}
922 }
923 
924 static int
925 snd_rme96_playback_setformat(struct rme96 *rme96,
926 			     int format)
927 {
928 	switch (format) {
929 	case SNDRV_PCM_FORMAT_S16_LE:
930 		rme96->wcreg &= ~RME96_WCR_MODE24;
931 		break;
932 	case SNDRV_PCM_FORMAT_S32_LE:
933 		rme96->wcreg |= RME96_WCR_MODE24;
934 		break;
935 	default:
936 		return -EINVAL;
937 	}
938 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
939 	return 0;
940 }
941 
942 static int
943 snd_rme96_capture_setformat(struct rme96 *rme96,
944 			    int format)
945 {
946 	switch (format) {
947 	case SNDRV_PCM_FORMAT_S16_LE:
948 		rme96->wcreg &= ~RME96_WCR_MODE24_2;
949 		break;
950 	case SNDRV_PCM_FORMAT_S32_LE:
951 		rme96->wcreg |= RME96_WCR_MODE24_2;
952 		break;
953 	default:
954 		return -EINVAL;
955 	}
956 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
957 	return 0;
958 }
959 
960 static void
961 snd_rme96_set_period_properties(struct rme96 *rme96,
962 				size_t period_bytes)
963 {
964 	switch (period_bytes) {
965 	case RME96_LARGE_BLOCK_SIZE:
966 		rme96->wcreg &= ~RME96_WCR_ISEL;
967 		break;
968 	case RME96_SMALL_BLOCK_SIZE:
969 		rme96->wcreg |= RME96_WCR_ISEL;
970 		break;
971 	default:
972 		snd_BUG();
973 		break;
974 	}
975 	rme96->wcreg &= ~RME96_WCR_IDIS;
976 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
977 }
978 
979 static int
980 snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
981 			     struct snd_pcm_hw_params *params)
982 {
983 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
984 	struct snd_pcm_runtime *runtime = substream->runtime;
985 	int err, rate, dummy;
986 
987 	runtime->dma_area = (void __force *)(rme96->iobase +
988 					     RME96_IO_PLAY_BUFFER);
989 	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
990 	runtime->dma_bytes = RME96_BUFFER_SIZE;
991 
992 	spin_lock_irq(&rme96->lock);
993 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
994             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
995 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
996 	{
997                 /* slave clock */
998                 if ((int)params_rate(params) != rate) {
999 			spin_unlock_irq(&rme96->lock);
1000 			return -EIO;
1001                 }
1002 	} else if ((err = snd_rme96_playback_setrate(rme96, params_rate(params))) < 0) {
1003 		spin_unlock_irq(&rme96->lock);
1004 		return err;
1005 	}
1006 	if ((err = snd_rme96_playback_setformat(rme96, params_format(params))) < 0) {
1007 		spin_unlock_irq(&rme96->lock);
1008 		return err;
1009 	}
1010 	snd_rme96_setframelog(rme96, params_channels(params), 1);
1011 	if (rme96->capture_periodsize != 0) {
1012 		if (params_period_size(params) << rme96->playback_frlog !=
1013 		    rme96->capture_periodsize)
1014 		{
1015 			spin_unlock_irq(&rme96->lock);
1016 			return -EBUSY;
1017 		}
1018 	}
1019 	rme96->playback_periodsize =
1020 		params_period_size(params) << rme96->playback_frlog;
1021 	snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
1022 	/* S/PDIF setup */
1023 	if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
1024 		rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
1025 		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1026 	}
1027 	spin_unlock_irq(&rme96->lock);
1028 
1029 	return 0;
1030 }
1031 
1032 static int
1033 snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
1034 			    struct snd_pcm_hw_params *params)
1035 {
1036 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1037 	struct snd_pcm_runtime *runtime = substream->runtime;
1038 	int err, isadat, rate;
1039 
1040 	runtime->dma_area = (void __force *)(rme96->iobase +
1041 					     RME96_IO_REC_BUFFER);
1042 	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
1043 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1044 
1045 	spin_lock_irq(&rme96->lock);
1046 	if ((err = snd_rme96_capture_setformat(rme96, params_format(params))) < 0) {
1047 		spin_unlock_irq(&rme96->lock);
1048 		return err;
1049 	}
1050 	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1051 		if ((err = snd_rme96_capture_analog_setrate(rme96,
1052 							    params_rate(params))) < 0)
1053 		{
1054 			spin_unlock_irq(&rme96->lock);
1055 			return err;
1056 		}
1057 	} else if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1058                 if ((int)params_rate(params) != rate) {
1059 			spin_unlock_irq(&rme96->lock);
1060 			return -EIO;
1061                 }
1062                 if ((isadat && runtime->hw.channels_min == 2) ||
1063                     (!isadat && runtime->hw.channels_min == 8))
1064                 {
1065 			spin_unlock_irq(&rme96->lock);
1066 			return -EIO;
1067                 }
1068         }
1069 	snd_rme96_setframelog(rme96, params_channels(params), 0);
1070 	if (rme96->playback_periodsize != 0) {
1071 		if (params_period_size(params) << rme96->capture_frlog !=
1072 		    rme96->playback_periodsize)
1073 		{
1074 			spin_unlock_irq(&rme96->lock);
1075 			return -EBUSY;
1076 		}
1077 	}
1078 	rme96->capture_periodsize =
1079 		params_period_size(params) << rme96->capture_frlog;
1080 	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
1081 	spin_unlock_irq(&rme96->lock);
1082 
1083 	return 0;
1084 }
1085 
1086 static void
1087 snd_rme96_trigger(struct rme96 *rme96,
1088 		  int op)
1089 {
1090 	if (op & RME96_TB_RESET_PLAYPOS)
1091 		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1092 	if (op & RME96_TB_RESET_CAPTUREPOS)
1093 		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1094 	if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) {
1095 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1096 		if (rme96->rcreg & RME96_RCR_IRQ)
1097 			writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1098 	}
1099 	if (op & RME96_TB_CLEAR_CAPTURE_IRQ) {
1100 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1101 		if (rme96->rcreg & RME96_RCR_IRQ_2)
1102 			writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1103 	}
1104 	if (op & RME96_TB_START_PLAYBACK)
1105 		rme96->wcreg |= RME96_WCR_START;
1106 	if (op & RME96_TB_STOP_PLAYBACK)
1107 		rme96->wcreg &= ~RME96_WCR_START;
1108 	if (op & RME96_TB_START_CAPTURE)
1109 		rme96->wcreg |= RME96_WCR_START_2;
1110 	if (op & RME96_TB_STOP_CAPTURE)
1111 		rme96->wcreg &= ~RME96_WCR_START_2;
1112 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1113 }
1114 
1115 
1116 
1117 static irqreturn_t
1118 snd_rme96_interrupt(int irq,
1119 		    void *dev_id)
1120 {
1121 	struct rme96 *rme96 = (struct rme96 *)dev_id;
1122 
1123 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1124 	/* fastpath out, to ease interrupt sharing */
1125 	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
1126 	      (rme96->rcreg & RME96_RCR_IRQ_2)))
1127 	{
1128 		return IRQ_NONE;
1129 	}
1130 
1131 	if (rme96->rcreg & RME96_RCR_IRQ) {
1132 		/* playback */
1133                 snd_pcm_period_elapsed(rme96->playback_substream);
1134 		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1135 	}
1136 	if (rme96->rcreg & RME96_RCR_IRQ_2) {
1137 		/* capture */
1138 		snd_pcm_period_elapsed(rme96->capture_substream);
1139 		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1140 	}
1141 	return IRQ_HANDLED;
1142 }
1143 
1144 static unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };
1145 
1146 static struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {
1147 	.count = ARRAY_SIZE(period_bytes),
1148 	.list = period_bytes,
1149 	.mask = 0
1150 };
1151 
1152 static void
1153 rme96_set_buffer_size_constraint(struct rme96 *rme96,
1154 				 struct snd_pcm_runtime *runtime)
1155 {
1156 	unsigned int size;
1157 
1158 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1159 				     RME96_BUFFER_SIZE, RME96_BUFFER_SIZE);
1160 	if ((size = rme96->playback_periodsize) != 0 ||
1161 	    (size = rme96->capture_periodsize) != 0)
1162 		snd_pcm_hw_constraint_minmax(runtime,
1163 					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1164 					     size, size);
1165 	else
1166 		snd_pcm_hw_constraint_list(runtime, 0,
1167 					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1168 					   &hw_constraints_period_bytes);
1169 }
1170 
1171 static int
1172 snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
1173 {
1174         int rate, dummy;
1175 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1176 	struct snd_pcm_runtime *runtime = substream->runtime;
1177 
1178 	snd_pcm_set_sync(substream);
1179 	spin_lock_irq(&rme96->lock);
1180         if (rme96->playback_substream != NULL) {
1181 		spin_unlock_irq(&rme96->lock);
1182                 return -EBUSY;
1183         }
1184 	rme96->wcreg &= ~RME96_WCR_ADAT;
1185 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1186 	rme96->playback_substream = substream;
1187 	spin_unlock_irq(&rme96->lock);
1188 
1189 	runtime->hw = snd_rme96_playback_spdif_info;
1190 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1191             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1192 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1193 	{
1194                 /* slave clock */
1195                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1196                 runtime->hw.rate_min = rate;
1197                 runtime->hw.rate_max = rate;
1198 	}
1199 	rme96_set_buffer_size_constraint(rme96, runtime);
1200 
1201 	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
1202 	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1203 	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1204 		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1205 	return 0;
1206 }
1207 
1208 static int
1209 snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
1210 {
1211         int isadat, rate;
1212 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1213 	struct snd_pcm_runtime *runtime = substream->runtime;
1214 
1215 	snd_pcm_set_sync(substream);
1216 	runtime->hw = snd_rme96_capture_spdif_info;
1217         if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1218             (rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0)
1219         {
1220                 if (isadat) {
1221                         return -EIO;
1222                 }
1223                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1224                 runtime->hw.rate_min = rate;
1225                 runtime->hw.rate_max = rate;
1226         }
1227 
1228 	spin_lock_irq(&rme96->lock);
1229         if (rme96->capture_substream != NULL) {
1230 		spin_unlock_irq(&rme96->lock);
1231                 return -EBUSY;
1232         }
1233 	rme96->capture_substream = substream;
1234 	spin_unlock_irq(&rme96->lock);
1235 
1236 	rme96_set_buffer_size_constraint(rme96, runtime);
1237 	return 0;
1238 }
1239 
1240 static int
1241 snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
1242 {
1243         int rate, dummy;
1244 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1245 	struct snd_pcm_runtime *runtime = substream->runtime;
1246 
1247 	snd_pcm_set_sync(substream);
1248 	spin_lock_irq(&rme96->lock);
1249         if (rme96->playback_substream != NULL) {
1250 		spin_unlock_irq(&rme96->lock);
1251                 return -EBUSY;
1252         }
1253 	rme96->wcreg |= RME96_WCR_ADAT;
1254 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1255 	rme96->playback_substream = substream;
1256 	spin_unlock_irq(&rme96->lock);
1257 
1258 	runtime->hw = snd_rme96_playback_adat_info;
1259 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1260             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1261 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1262 	{
1263                 /* slave clock */
1264                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1265                 runtime->hw.rate_min = rate;
1266                 runtime->hw.rate_max = rate;
1267 	}
1268 	rme96_set_buffer_size_constraint(rme96, runtime);
1269 	return 0;
1270 }
1271 
1272 static int
1273 snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
1274 {
1275         int isadat, rate;
1276 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1277 	struct snd_pcm_runtime *runtime = substream->runtime;
1278 
1279 	snd_pcm_set_sync(substream);
1280 	runtime->hw = snd_rme96_capture_adat_info;
1281         if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1282                 /* makes no sense to use analog input. Note that analog
1283                    expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
1284                 return -EIO;
1285         }
1286         if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1287                 if (!isadat) {
1288                         return -EIO;
1289                 }
1290                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1291                 runtime->hw.rate_min = rate;
1292                 runtime->hw.rate_max = rate;
1293         }
1294 
1295 	spin_lock_irq(&rme96->lock);
1296         if (rme96->capture_substream != NULL) {
1297 		spin_unlock_irq(&rme96->lock);
1298                 return -EBUSY;
1299         }
1300 	rme96->capture_substream = substream;
1301 	spin_unlock_irq(&rme96->lock);
1302 
1303 	rme96_set_buffer_size_constraint(rme96, runtime);
1304 	return 0;
1305 }
1306 
1307 static int
1308 snd_rme96_playback_close(struct snd_pcm_substream *substream)
1309 {
1310 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1311 	int spdif = 0;
1312 
1313 	spin_lock_irq(&rme96->lock);
1314 	if (RME96_ISPLAYING(rme96)) {
1315 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1316 	}
1317 	rme96->playback_substream = NULL;
1318 	rme96->playback_periodsize = 0;
1319 	spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
1320 	spin_unlock_irq(&rme96->lock);
1321 	if (spdif) {
1322 		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1323 		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1324 			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1325 	}
1326 	return 0;
1327 }
1328 
1329 static int
1330 snd_rme96_capture_close(struct snd_pcm_substream *substream)
1331 {
1332 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1333 
1334 	spin_lock_irq(&rme96->lock);
1335 	if (RME96_ISRECORDING(rme96)) {
1336 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1337 	}
1338 	rme96->capture_substream = NULL;
1339 	rme96->capture_periodsize = 0;
1340 	spin_unlock_irq(&rme96->lock);
1341 	return 0;
1342 }
1343 
1344 static int
1345 snd_rme96_playback_prepare(struct snd_pcm_substream *substream)
1346 {
1347 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1348 
1349 	spin_lock_irq(&rme96->lock);
1350 	if (RME96_ISPLAYING(rme96)) {
1351 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1352 	}
1353 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1354 	spin_unlock_irq(&rme96->lock);
1355 	return 0;
1356 }
1357 
1358 static int
1359 snd_rme96_capture_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_ISRECORDING(rme96)) {
1365 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1366 	}
1367 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1368 	spin_unlock_irq(&rme96->lock);
1369 	return 0;
1370 }
1371 
1372 static int
1373 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
1374 			   int cmd)
1375 {
1376 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1377 	struct snd_pcm_substream *s;
1378 	bool sync;
1379 
1380 	snd_pcm_group_for_each_entry(s, substream) {
1381 		if (snd_pcm_substream_chip(s) == rme96)
1382 			snd_pcm_trigger_done(s, substream);
1383 	}
1384 
1385 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1386 	       (rme96->playback_substream->group ==
1387 		rme96->capture_substream->group);
1388 
1389 	switch (cmd) {
1390 	case SNDRV_PCM_TRIGGER_START:
1391 		if (!RME96_ISPLAYING(rme96)) {
1392 			if (substream != rme96->playback_substream)
1393 				return -EBUSY;
1394 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1395 						 : RME96_START_PLAYBACK);
1396 		}
1397 		break;
1398 
1399 	case SNDRV_PCM_TRIGGER_SUSPEND:
1400 	case SNDRV_PCM_TRIGGER_STOP:
1401 		if (RME96_ISPLAYING(rme96)) {
1402 			if (substream != rme96->playback_substream)
1403 				return -EBUSY;
1404 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1405 						 :  RME96_STOP_PLAYBACK);
1406 		}
1407 		break;
1408 
1409 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1410 		if (RME96_ISPLAYING(rme96))
1411 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1412 						 : RME96_STOP_PLAYBACK);
1413 		break;
1414 
1415 	case SNDRV_PCM_TRIGGER_RESUME:
1416 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1417 		if (!RME96_ISPLAYING(rme96))
1418 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1419 						 : RME96_RESUME_PLAYBACK);
1420 		break;
1421 
1422 	default:
1423 		return -EINVAL;
1424 	}
1425 
1426 	return 0;
1427 }
1428 
1429 static int
1430 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
1431 			  int cmd)
1432 {
1433 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1434 	struct snd_pcm_substream *s;
1435 	bool sync;
1436 
1437 	snd_pcm_group_for_each_entry(s, substream) {
1438 		if (snd_pcm_substream_chip(s) == rme96)
1439 			snd_pcm_trigger_done(s, substream);
1440 	}
1441 
1442 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1443 	       (rme96->playback_substream->group ==
1444 		rme96->capture_substream->group);
1445 
1446 	switch (cmd) {
1447 	case SNDRV_PCM_TRIGGER_START:
1448 		if (!RME96_ISRECORDING(rme96)) {
1449 			if (substream != rme96->capture_substream)
1450 				return -EBUSY;
1451 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1452 						 : RME96_START_CAPTURE);
1453 		}
1454 		break;
1455 
1456 	case SNDRV_PCM_TRIGGER_SUSPEND:
1457 	case SNDRV_PCM_TRIGGER_STOP:
1458 		if (RME96_ISRECORDING(rme96)) {
1459 			if (substream != rme96->capture_substream)
1460 				return -EBUSY;
1461 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1462 						 : RME96_STOP_CAPTURE);
1463 		}
1464 		break;
1465 
1466 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1467 		if (RME96_ISRECORDING(rme96))
1468 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1469 						 : RME96_STOP_CAPTURE);
1470 		break;
1471 
1472 	case SNDRV_PCM_TRIGGER_RESUME:
1473 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1474 		if (!RME96_ISRECORDING(rme96))
1475 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1476 						 : RME96_RESUME_CAPTURE);
1477 		break;
1478 
1479 	default:
1480 		return -EINVAL;
1481 	}
1482 
1483 	return 0;
1484 }
1485 
1486 static snd_pcm_uframes_t
1487 snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
1488 {
1489 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1490 	return snd_rme96_playback_ptr(rme96);
1491 }
1492 
1493 static snd_pcm_uframes_t
1494 snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
1495 {
1496 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1497 	return snd_rme96_capture_ptr(rme96);
1498 }
1499 
1500 static struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
1501 	.open =		snd_rme96_playback_spdif_open,
1502 	.close =	snd_rme96_playback_close,
1503 	.ioctl =	snd_pcm_lib_ioctl,
1504 	.hw_params =	snd_rme96_playback_hw_params,
1505 	.prepare =	snd_rme96_playback_prepare,
1506 	.trigger =	snd_rme96_playback_trigger,
1507 	.pointer =	snd_rme96_playback_pointer,
1508 	.copy =		snd_rme96_playback_copy,
1509 	.silence =	snd_rme96_playback_silence,
1510 	.mmap =		snd_pcm_lib_mmap_iomem,
1511 };
1512 
1513 static struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
1514 	.open =		snd_rme96_capture_spdif_open,
1515 	.close =	snd_rme96_capture_close,
1516 	.ioctl =	snd_pcm_lib_ioctl,
1517 	.hw_params =	snd_rme96_capture_hw_params,
1518 	.prepare =	snd_rme96_capture_prepare,
1519 	.trigger =	snd_rme96_capture_trigger,
1520 	.pointer =	snd_rme96_capture_pointer,
1521 	.copy =		snd_rme96_capture_copy,
1522 	.mmap =		snd_pcm_lib_mmap_iomem,
1523 };
1524 
1525 static struct snd_pcm_ops snd_rme96_playback_adat_ops = {
1526 	.open =		snd_rme96_playback_adat_open,
1527 	.close =	snd_rme96_playback_close,
1528 	.ioctl =	snd_pcm_lib_ioctl,
1529 	.hw_params =	snd_rme96_playback_hw_params,
1530 	.prepare =	snd_rme96_playback_prepare,
1531 	.trigger =	snd_rme96_playback_trigger,
1532 	.pointer =	snd_rme96_playback_pointer,
1533 	.copy =		snd_rme96_playback_copy,
1534 	.silence =	snd_rme96_playback_silence,
1535 	.mmap =		snd_pcm_lib_mmap_iomem,
1536 };
1537 
1538 static struct snd_pcm_ops snd_rme96_capture_adat_ops = {
1539 	.open =		snd_rme96_capture_adat_open,
1540 	.close =	snd_rme96_capture_close,
1541 	.ioctl =	snd_pcm_lib_ioctl,
1542 	.hw_params =	snd_rme96_capture_hw_params,
1543 	.prepare =	snd_rme96_capture_prepare,
1544 	.trigger =	snd_rme96_capture_trigger,
1545 	.pointer =	snd_rme96_capture_pointer,
1546 	.copy =		snd_rme96_capture_copy,
1547 	.mmap =		snd_pcm_lib_mmap_iomem,
1548 };
1549 
1550 static void
1551 snd_rme96_free(void *private_data)
1552 {
1553 	struct rme96 *rme96 = (struct rme96 *)private_data;
1554 
1555 	if (rme96 == NULL) {
1556 	        return;
1557 	}
1558 	if (rme96->irq >= 0) {
1559 		snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1560 		rme96->areg &= ~RME96_AR_DAC_EN;
1561 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1562 		free_irq(rme96->irq, (void *)rme96);
1563 		rme96->irq = -1;
1564 	}
1565 	if (rme96->iobase) {
1566 		iounmap(rme96->iobase);
1567 		rme96->iobase = NULL;
1568 	}
1569 	if (rme96->port) {
1570 		pci_release_regions(rme96->pci);
1571 		rme96->port = 0;
1572 	}
1573 #ifdef CONFIG_PM_SLEEP
1574 	vfree(rme96->playback_suspend_buffer);
1575 	vfree(rme96->capture_suspend_buffer);
1576 #endif
1577 	pci_disable_device(rme96->pci);
1578 }
1579 
1580 static void
1581 snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
1582 {
1583 	struct rme96 *rme96 = pcm->private_data;
1584 	rme96->spdif_pcm = NULL;
1585 }
1586 
1587 static void
1588 snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
1589 {
1590 	struct rme96 *rme96 = pcm->private_data;
1591 	rme96->adat_pcm = NULL;
1592 }
1593 
1594 static int
1595 snd_rme96_create(struct rme96 *rme96)
1596 {
1597 	struct pci_dev *pci = rme96->pci;
1598 	int err;
1599 
1600 	rme96->irq = -1;
1601 	spin_lock_init(&rme96->lock);
1602 
1603 	if ((err = pci_enable_device(pci)) < 0)
1604 		return err;
1605 
1606 	if ((err = pci_request_regions(pci, "RME96")) < 0)
1607 		return err;
1608 	rme96->port = pci_resource_start(rme96->pci, 0);
1609 
1610 	rme96->iobase = ioremap_nocache(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 -ENOMEM;
1616 	}
1617 
1618 	if (request_irq(pci->irq, snd_rme96_interrupt, IRQF_SHARED,
1619 			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 
1625 	/* read the card's revision number */
1626 	pci_read_config_byte(pci, 8, &rme96->rev);
1627 
1628 	/* set up ALSA pcm device for S/PDIF */
1629 	if ((err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
1630 			       1, 1, &rme96->spdif_pcm)) < 0)
1631 	{
1632 		return err;
1633 	}
1634 	rme96->spdif_pcm->private_data = rme96;
1635 	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
1636 	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
1637 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
1638 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
1639 
1640 	rme96->spdif_pcm->info_flags = 0;
1641 
1642 	/* set up ALSA pcm device for ADAT */
1643 	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
1644 		/* ADAT is not available on the base model */
1645 		rme96->adat_pcm = NULL;
1646 	} else {
1647 		if ((err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
1648 				       1, 1, &rme96->adat_pcm)) < 0)
1649 		{
1650 			return err;
1651 		}
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 	if ((err = snd_rme96_create_switches(rme96->card, rme96)) < 0) {
1701 		return err;
1702 	}
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 	struct snd_info_entry *entry;
1846 
1847 	if (! snd_card_proc_new(rme96->card, "rme96", &entry))
1848 		snd_info_set_text_ops(entry, rme96, snd_rme96_proc_read);
1849 }
1850 
1851 /*
1852  * control interface
1853  */
1854 
1855 #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info
1856 
1857 static int
1858 snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1859 {
1860 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1861 
1862 	spin_lock_irq(&rme96->lock);
1863 	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
1864 	spin_unlock_irq(&rme96->lock);
1865 	return 0;
1866 }
1867 static int
1868 snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1869 {
1870 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1871 	unsigned int val;
1872 	int change;
1873 
1874 	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
1875 	spin_lock_irq(&rme96->lock);
1876 	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
1877 	change = val != rme96->wcreg;
1878 	rme96->wcreg = val;
1879 	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1880 	spin_unlock_irq(&rme96->lock);
1881 	return change;
1882 }
1883 
1884 static int
1885 snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1886 {
1887 	static const char * const _texts[5] = {
1888 		"Optical", "Coaxial", "Internal", "XLR", "Analog"
1889 	};
1890 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1891 	const char *texts[5] = {
1892 		_texts[0], _texts[1], _texts[2], _texts[3], _texts[4]
1893 	};
1894 	int num_items;
1895 
1896 	switch (rme96->pci->device) {
1897 	case PCI_DEVICE_ID_RME_DIGI96:
1898 	case PCI_DEVICE_ID_RME_DIGI96_8:
1899 		num_items = 3;
1900 		break;
1901 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1902 		num_items = 4;
1903 		break;
1904 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1905 		if (rme96->rev > 4) {
1906 			/* PST */
1907 			num_items = 4;
1908 			texts[3] = _texts[4]; /* Analog instead of XLR */
1909 		} else {
1910 			/* PAD */
1911 			num_items = 5;
1912 		}
1913 		break;
1914 	default:
1915 		snd_BUG();
1916 		return -EINVAL;
1917 	}
1918 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
1919 }
1920 static int
1921 snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1922 {
1923 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1924 	unsigned int items = 3;
1925 
1926 	spin_lock_irq(&rme96->lock);
1927 	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
1928 
1929 	switch (rme96->pci->device) {
1930 	case PCI_DEVICE_ID_RME_DIGI96:
1931 	case PCI_DEVICE_ID_RME_DIGI96_8:
1932 		items = 3;
1933 		break;
1934 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1935 		items = 4;
1936 		break;
1937 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1938 		if (rme96->rev > 4) {
1939 			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
1940 			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
1941 				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
1942 			}
1943 			items = 4;
1944 		} else {
1945 			items = 5;
1946 		}
1947 		break;
1948 	default:
1949 		snd_BUG();
1950 		break;
1951 	}
1952 	if (ucontrol->value.enumerated.item[0] >= items) {
1953 		ucontrol->value.enumerated.item[0] = items - 1;
1954 	}
1955 
1956 	spin_unlock_irq(&rme96->lock);
1957 	return 0;
1958 }
1959 static int
1960 snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1961 {
1962 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1963 	unsigned int val;
1964 	int change, items = 3;
1965 
1966 	switch (rme96->pci->device) {
1967 	case PCI_DEVICE_ID_RME_DIGI96:
1968 	case PCI_DEVICE_ID_RME_DIGI96_8:
1969 		items = 3;
1970 		break;
1971 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1972 		items = 4;
1973 		break;
1974 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1975 		if (rme96->rev > 4) {
1976 			items = 4;
1977 		} else {
1978 			items = 5;
1979 		}
1980 		break;
1981 	default:
1982 		snd_BUG();
1983 		break;
1984 	}
1985 	val = ucontrol->value.enumerated.item[0] % items;
1986 
1987 	/* special case for PST */
1988 	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {
1989 		if (val == RME96_INPUT_XLR) {
1990 			val = RME96_INPUT_ANALOG;
1991 		}
1992 	}
1993 
1994 	spin_lock_irq(&rme96->lock);
1995 	change = (int)val != snd_rme96_getinputtype(rme96);
1996 	snd_rme96_setinputtype(rme96, val);
1997 	spin_unlock_irq(&rme96->lock);
1998 	return change;
1999 }
2000 
2001 static int
2002 snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2003 {
2004 	static const char * const texts[3] = { "AutoSync", "Internal", "Word" };
2005 
2006 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
2007 }
2008 static int
2009 snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2010 {
2011 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2012 
2013 	spin_lock_irq(&rme96->lock);
2014 	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
2015 	spin_unlock_irq(&rme96->lock);
2016 	return 0;
2017 }
2018 static int
2019 snd_rme96_put_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2020 {
2021 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2022 	unsigned int val;
2023 	int change;
2024 
2025 	val = ucontrol->value.enumerated.item[0] % 3;
2026 	spin_lock_irq(&rme96->lock);
2027 	change = (int)val != snd_rme96_getclockmode(rme96);
2028 	snd_rme96_setclockmode(rme96, val);
2029 	spin_unlock_irq(&rme96->lock);
2030 	return change;
2031 }
2032 
2033 static int
2034 snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2035 {
2036 	static const char * const texts[4] = {
2037 		"0 dB", "-6 dB", "-12 dB", "-18 dB"
2038 	};
2039 
2040 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2041 }
2042 static int
2043 snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2044 {
2045 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2046 
2047 	spin_lock_irq(&rme96->lock);
2048 	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
2049 	spin_unlock_irq(&rme96->lock);
2050 	return 0;
2051 }
2052 static int
2053 snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2054 {
2055 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2056 	unsigned int val;
2057 	int change;
2058 
2059 	val = ucontrol->value.enumerated.item[0] % 4;
2060 	spin_lock_irq(&rme96->lock);
2061 
2062 	change = (int)val != snd_rme96_getattenuation(rme96);
2063 	snd_rme96_setattenuation(rme96, val);
2064 	spin_unlock_irq(&rme96->lock);
2065 	return change;
2066 }
2067 
2068 static int
2069 snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2070 {
2071 	static const char * const texts[4] = { "1+2", "3+4", "5+6", "7+8" };
2072 
2073 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2074 }
2075 static int
2076 snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2077 {
2078 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2079 
2080 	spin_lock_irq(&rme96->lock);
2081 	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
2082 	spin_unlock_irq(&rme96->lock);
2083 	return 0;
2084 }
2085 static int
2086 snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2087 {
2088 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2089 	unsigned int val;
2090 	int change;
2091 
2092 	val = ucontrol->value.enumerated.item[0] % 4;
2093 	spin_lock_irq(&rme96->lock);
2094 	change = (int)val != snd_rme96_getmontracks(rme96);
2095 	snd_rme96_setmontracks(rme96, val);
2096 	spin_unlock_irq(&rme96->lock);
2097 	return change;
2098 }
2099 
2100 static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)
2101 {
2102 	u32 val = 0;
2103 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
2104 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
2105 	if (val & RME96_WCR_PRO)
2106 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2107 	else
2108 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2109 	return val;
2110 }
2111 
2112 static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
2113 {
2114 	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
2115 			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
2116 	if (val & RME96_WCR_PRO)
2117 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
2118 	else
2119 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
2120 }
2121 
2122 static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2123 {
2124 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2125 	uinfo->count = 1;
2126 	return 0;
2127 }
2128 
2129 static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2130 {
2131 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2132 
2133 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
2134 	return 0;
2135 }
2136 
2137 static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2138 {
2139 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2140 	int change;
2141 	u32 val;
2142 
2143 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2144 	spin_lock_irq(&rme96->lock);
2145 	change = val != rme96->wcreg_spdif;
2146 	rme96->wcreg_spdif = val;
2147 	spin_unlock_irq(&rme96->lock);
2148 	return change;
2149 }
2150 
2151 static int snd_rme96_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2152 {
2153 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2154 	uinfo->count = 1;
2155 	return 0;
2156 }
2157 
2158 static int snd_rme96_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2159 {
2160 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2161 
2162 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif_stream);
2163 	return 0;
2164 }
2165 
2166 static int snd_rme96_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2167 {
2168 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2169 	int change;
2170 	u32 val;
2171 
2172 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2173 	spin_lock_irq(&rme96->lock);
2174 	change = val != rme96->wcreg_spdif_stream;
2175 	rme96->wcreg_spdif_stream = val;
2176 	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
2177 	rme96->wcreg |= val;
2178 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
2179 	spin_unlock_irq(&rme96->lock);
2180 	return change;
2181 }
2182 
2183 static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2184 {
2185 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2186 	uinfo->count = 1;
2187 	return 0;
2188 }
2189 
2190 static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2191 {
2192 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
2193 	return 0;
2194 }
2195 
2196 static int
2197 snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2198 {
2199 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2200 
2201         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2202         uinfo->count = 2;
2203         uinfo->value.integer.min = 0;
2204 	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
2205         return 0;
2206 }
2207 
2208 static int
2209 snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2210 {
2211 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2212 
2213 	spin_lock_irq(&rme96->lock);
2214         u->value.integer.value[0] = rme96->vol[0];
2215         u->value.integer.value[1] = rme96->vol[1];
2216 	spin_unlock_irq(&rme96->lock);
2217 
2218         return 0;
2219 }
2220 
2221 static int
2222 snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2223 {
2224 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2225         int change = 0;
2226 	unsigned int vol, maxvol;
2227 
2228 
2229 	if (!RME96_HAS_ANALOG_OUT(rme96))
2230 		return -EINVAL;
2231 	maxvol = RME96_185X_MAX_OUT(rme96);
2232 	spin_lock_irq(&rme96->lock);
2233 	vol = u->value.integer.value[0];
2234 	if (vol != rme96->vol[0] && vol <= maxvol) {
2235 		rme96->vol[0] = vol;
2236 		change = 1;
2237 	}
2238 	vol = u->value.integer.value[1];
2239 	if (vol != rme96->vol[1] && vol <= maxvol) {
2240 		rme96->vol[1] = vol;
2241 		change = 1;
2242 	}
2243 	if (change)
2244 		snd_rme96_apply_dac_volume(rme96);
2245 	spin_unlock_irq(&rme96->lock);
2246 
2247         return change;
2248 }
2249 
2250 static struct snd_kcontrol_new snd_rme96_controls[] = {
2251 {
2252 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2253 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2254 	.info =		snd_rme96_control_spdif_info,
2255 	.get =		snd_rme96_control_spdif_get,
2256 	.put =		snd_rme96_control_spdif_put
2257 },
2258 {
2259 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2260 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2261 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2262 	.info =		snd_rme96_control_spdif_stream_info,
2263 	.get =		snd_rme96_control_spdif_stream_get,
2264 	.put =		snd_rme96_control_spdif_stream_put
2265 },
2266 {
2267 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2268 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2269 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
2270 	.info =		snd_rme96_control_spdif_mask_info,
2271 	.get =		snd_rme96_control_spdif_mask_get,
2272 	.private_value = IEC958_AES0_NONAUDIO |
2273 			IEC958_AES0_PROFESSIONAL |
2274 			IEC958_AES0_CON_EMPHASIS
2275 },
2276 {
2277 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2278 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2279 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
2280 	.info =		snd_rme96_control_spdif_mask_info,
2281 	.get =		snd_rme96_control_spdif_mask_get,
2282 	.private_value = IEC958_AES0_NONAUDIO |
2283 			IEC958_AES0_PROFESSIONAL |
2284 			IEC958_AES0_PRO_EMPHASIS
2285 },
2286 {
2287         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2288 	.name =         "Input Connector",
2289 	.info =         snd_rme96_info_inputtype_control,
2290 	.get =          snd_rme96_get_inputtype_control,
2291 	.put =          snd_rme96_put_inputtype_control
2292 },
2293 {
2294         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2295 	.name =         "Loopback Input",
2296 	.info =         snd_rme96_info_loopback_control,
2297 	.get =          snd_rme96_get_loopback_control,
2298 	.put =          snd_rme96_put_loopback_control
2299 },
2300 {
2301         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2302 	.name =         "Sample Clock Source",
2303 	.info =         snd_rme96_info_clockmode_control,
2304 	.get =          snd_rme96_get_clockmode_control,
2305 	.put =          snd_rme96_put_clockmode_control
2306 },
2307 {
2308         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2309 	.name =         "Monitor Tracks",
2310 	.info =         snd_rme96_info_montracks_control,
2311 	.get =          snd_rme96_get_montracks_control,
2312 	.put =          snd_rme96_put_montracks_control
2313 },
2314 {
2315         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2316 	.name =         "Attenuation",
2317 	.info =         snd_rme96_info_attenuation_control,
2318 	.get =          snd_rme96_get_attenuation_control,
2319 	.put =          snd_rme96_put_attenuation_control
2320 },
2321 {
2322         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2323 	.name =         "DAC Playback Volume",
2324 	.info =         snd_rme96_dac_volume_info,
2325 	.get =          snd_rme96_dac_volume_get,
2326 	.put =          snd_rme96_dac_volume_put
2327 }
2328 };
2329 
2330 static int
2331 snd_rme96_create_switches(struct snd_card *card,
2332 			  struct rme96 *rme96)
2333 {
2334 	int idx, err;
2335 	struct snd_kcontrol *kctl;
2336 
2337 	for (idx = 0; idx < 7; idx++) {
2338 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2339 			return err;
2340 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
2341 			rme96->spdif_ctl = kctl;
2342 	}
2343 
2344 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2345 		for (idx = 7; idx < 10; idx++)
2346 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2347 				return err;
2348 	}
2349 
2350 	return 0;
2351 }
2352 
2353 /*
2354  * Card initialisation
2355  */
2356 
2357 #ifdef CONFIG_PM_SLEEP
2358 
2359 static int rme96_suspend(struct device *dev)
2360 {
2361 	struct pci_dev *pci = to_pci_dev(dev);
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 	snd_pcm_suspend(rme96->playback_substream);
2367 	snd_pcm_suspend(rme96->capture_substream);
2368 
2369 	/* save capture & playback pointers */
2370 	rme96->playback_pointer = readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
2371 				  & RME96_RCR_AUDIO_ADDR_MASK;
2372 	rme96->capture_pointer = readl(rme96->iobase + RME96_IO_GET_REC_POS)
2373 				 & RME96_RCR_AUDIO_ADDR_MASK;
2374 
2375 	/* save playback and capture buffers */
2376 	memcpy_fromio(rme96->playback_suspend_buffer,
2377 		      rme96->iobase + RME96_IO_PLAY_BUFFER, RME96_BUFFER_SIZE);
2378 	memcpy_fromio(rme96->capture_suspend_buffer,
2379 		      rme96->iobase + RME96_IO_REC_BUFFER, RME96_BUFFER_SIZE);
2380 
2381 	/* disable the DAC  */
2382 	rme96->areg &= ~RME96_AR_DAC_EN;
2383 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2384 
2385 	pci_disable_device(pci);
2386 	pci_save_state(pci);
2387 
2388 	return 0;
2389 }
2390 
2391 static int rme96_resume(struct device *dev)
2392 {
2393 	struct pci_dev *pci = to_pci_dev(dev);
2394 	struct snd_card *card = dev_get_drvdata(dev);
2395 	struct rme96 *rme96 = card->private_data;
2396 
2397 	pci_restore_state(pci);
2398 	if (pci_enable_device(pci) < 0) {
2399 		dev_err(dev, "pci_enable_device failed, disabling device\n");
2400 		snd_card_disconnect(card);
2401 		return -EIO;
2402 	}
2403 
2404 	/* reset playback and record buffer pointers */
2405 	writel(0, rme96->iobase + RME96_IO_SET_PLAY_POS
2406 		  + rme96->playback_pointer);
2407 	writel(0, rme96->iobase + RME96_IO_SET_REC_POS
2408 		  + rme96->capture_pointer);
2409 
2410 	/* restore playback and capture buffers */
2411 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER,
2412 		    rme96->playback_suspend_buffer, RME96_BUFFER_SIZE);
2413 	memcpy_toio(rme96->iobase + RME96_IO_REC_BUFFER,
2414 		    rme96->capture_suspend_buffer, RME96_BUFFER_SIZE);
2415 
2416 	/* reset the ADC */
2417 	writel(rme96->areg | RME96_AR_PD2,
2418 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
2419 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2420 
2421 	/* reset and enable DAC, restore analog volume */
2422 	snd_rme96_reset_dac(rme96);
2423 	rme96->areg |= RME96_AR_DAC_EN;
2424 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2425 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2426 		usleep_range(3000, 10000);
2427 		snd_rme96_apply_dac_volume(rme96);
2428 	}
2429 
2430 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2431 
2432 	return 0;
2433 }
2434 
2435 static SIMPLE_DEV_PM_OPS(rme96_pm, rme96_suspend, rme96_resume);
2436 #define RME96_PM_OPS	&rme96_pm
2437 #else
2438 #define RME96_PM_OPS	NULL
2439 #endif /* CONFIG_PM_SLEEP */
2440 
2441 static void snd_rme96_card_free(struct snd_card *card)
2442 {
2443 	snd_rme96_free(card->private_data);
2444 }
2445 
2446 static int
2447 snd_rme96_probe(struct pci_dev *pci,
2448 		const struct pci_device_id *pci_id)
2449 {
2450 	static int dev;
2451 	struct rme96 *rme96;
2452 	struct snd_card *card;
2453 	int err;
2454 	u8 val;
2455 
2456 	if (dev >= SNDRV_CARDS) {
2457 		return -ENODEV;
2458 	}
2459 	if (!enable[dev]) {
2460 		dev++;
2461 		return -ENOENT;
2462 	}
2463 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2464 			   sizeof(struct rme96), &card);
2465 	if (err < 0)
2466 		return err;
2467 	card->private_free = snd_rme96_card_free;
2468 	rme96 = card->private_data;
2469 	rme96->card = card;
2470 	rme96->pci = pci;
2471 	if ((err = snd_rme96_create(rme96)) < 0) {
2472 		snd_card_free(card);
2473 		return err;
2474 	}
2475 
2476 #ifdef CONFIG_PM_SLEEP
2477 	rme96->playback_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2478 	if (!rme96->playback_suspend_buffer) {
2479 		dev_err(card->dev,
2480 			   "Failed to allocate playback suspend buffer!\n");
2481 		snd_card_free(card);
2482 		return -ENOMEM;
2483 	}
2484 	rme96->capture_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2485 	if (!rme96->capture_suspend_buffer) {
2486 		dev_err(card->dev,
2487 			   "Failed to allocate capture suspend buffer!\n");
2488 		snd_card_free(card);
2489 		return -ENOMEM;
2490 	}
2491 #endif
2492 
2493 	strcpy(card->driver, "Digi96");
2494 	switch (rme96->pci->device) {
2495 	case PCI_DEVICE_ID_RME_DIGI96:
2496 		strcpy(card->shortname, "RME Digi96");
2497 		break;
2498 	case PCI_DEVICE_ID_RME_DIGI96_8:
2499 		strcpy(card->shortname, "RME Digi96/8");
2500 		break;
2501 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
2502 		strcpy(card->shortname, "RME Digi96/8 PRO");
2503 		break;
2504 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2505 		pci_read_config_byte(rme96->pci, 8, &val);
2506 		if (val < 5) {
2507 			strcpy(card->shortname, "RME Digi96/8 PAD");
2508 		} else {
2509 			strcpy(card->shortname, "RME Digi96/8 PST");
2510 		}
2511 		break;
2512 	}
2513 	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
2514 		rme96->port, rme96->irq);
2515 
2516 	if ((err = snd_card_register(card)) < 0) {
2517 		snd_card_free(card);
2518 		return err;
2519 	}
2520 	pci_set_drvdata(pci, card);
2521 	dev++;
2522 	return 0;
2523 }
2524 
2525 static void snd_rme96_remove(struct pci_dev *pci)
2526 {
2527 	snd_card_free(pci_get_drvdata(pci));
2528 }
2529 
2530 static struct pci_driver rme96_driver = {
2531 	.name = KBUILD_MODNAME,
2532 	.id_table = snd_rme96_ids,
2533 	.probe = snd_rme96_probe,
2534 	.remove = snd_rme96_remove,
2535 	.driver = {
2536 		.pm = RME96_PM_OPS,
2537 	},
2538 };
2539 
2540 module_pci_driver(rme96_driver);
2541