xref: /linux/sound/pci/rme96.c (revision 05a54fa773284d1a7923cdfdd8f0c8dabb98bd26)
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 	u32 playback_pointer;
224 	u32 capture_pointer;
225 	void *playback_suspend_buffer;
226 	void *capture_suspend_buffer;
227 
228 	struct snd_pcm_substream *playback_substream;
229 	struct snd_pcm_substream *capture_substream;
230 
231 	int playback_frlog; /* log2 of framesize */
232 	int capture_frlog;
233 
234         size_t playback_periodsize; /* in bytes, zero if not used */
235 	size_t capture_periodsize; /* in bytes, zero if not used */
236 
237 	struct snd_card *card;
238 	struct snd_pcm *spdif_pcm;
239 	struct snd_pcm *adat_pcm;
240 	struct pci_dev     *pci;
241 	struct snd_kcontrol   *spdif_ctl;
242 };
243 
244 static const struct pci_device_id snd_rme96_ids[] = {
245 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96), 0, },
246 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8), 0, },
247 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PRO), 0, },
248 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST), 0, },
249 	{ 0, }
250 };
251 
252 MODULE_DEVICE_TABLE(pci, snd_rme96_ids);
253 
254 #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
255 #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)
256 #define	RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
257 #define	RME96_HAS_ANALOG_OUT(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO || \
258 				     (rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
259 #define	RME96_DAC_IS_1852(rme96) (RME96_HAS_ANALOG_OUT(rme96) && (rme96)->rev >= 4)
260 #define	RME96_DAC_IS_1855(rme96) (((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && (rme96)->rev < 4) || \
261 			          ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO && (rme96)->rev == 2))
262 #define	RME96_185X_MAX_OUT(rme96) ((1 << (RME96_DAC_IS_1852(rme96) ? RME96_AD1852_VOL_BITS : RME96_AD1855_VOL_BITS)) - 1)
263 
264 static int
265 snd_rme96_playback_prepare(struct snd_pcm_substream *substream);
266 
267 static int
268 snd_rme96_capture_prepare(struct snd_pcm_substream *substream);
269 
270 static int
271 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
272 			   int cmd);
273 
274 static int
275 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
276 			  int cmd);
277 
278 static snd_pcm_uframes_t
279 snd_rme96_playback_pointer(struct snd_pcm_substream *substream);
280 
281 static snd_pcm_uframes_t
282 snd_rme96_capture_pointer(struct snd_pcm_substream *substream);
283 
284 static void snd_rme96_proc_init(struct rme96 *rme96);
285 
286 static int
287 snd_rme96_create_switches(struct snd_card *card,
288 			  struct rme96 *rme96);
289 
290 static int
291 snd_rme96_getinputtype(struct rme96 *rme96);
292 
293 static inline unsigned int
294 snd_rme96_playback_ptr(struct rme96 *rme96)
295 {
296 	return (readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
297 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->playback_frlog;
298 }
299 
300 static inline unsigned int
301 snd_rme96_capture_ptr(struct rme96 *rme96)
302 {
303 	return (readl(rme96->iobase + RME96_IO_GET_REC_POS)
304 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->capture_frlog;
305 }
306 
307 static int
308 snd_rme96_playback_silence(struct snd_pcm_substream *substream,
309 			   int channel, unsigned long pos, unsigned long count)
310 {
311 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
312 
313 	memset_io(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
314 		  0, count);
315 	return 0;
316 }
317 
318 static int
319 snd_rme96_playback_copy(struct snd_pcm_substream *substream,
320 			int channel, unsigned long pos,
321 			struct iov_iter *src, unsigned long count)
322 {
323 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
324 
325 	if (copy_from_iter_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
326 				count, src) != count)
327 		return -EFAULT;
328 	return 0;
329 }
330 
331 static int
332 snd_rme96_capture_copy(struct snd_pcm_substream *substream,
333 		       int channel, unsigned long pos,
334 		       struct iov_iter *dst, unsigned long count)
335 {
336 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
337 
338 	if (copy_to_iter_fromio(rme96->iobase + RME96_IO_REC_BUFFER + pos,
339 				count, dst) != count)
340 		return -EFAULT;
341 	return 0;
342 }
343 
344 /*
345  * Digital output capabilities (S/PDIF)
346  */
347 static const struct snd_pcm_hardware snd_rme96_playback_spdif_info =
348 {
349 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
350 			      SNDRV_PCM_INFO_MMAP_VALID |
351 			      SNDRV_PCM_INFO_SYNC_START |
352 			      SNDRV_PCM_INFO_RESUME |
353 			      SNDRV_PCM_INFO_INTERLEAVED |
354 			      SNDRV_PCM_INFO_PAUSE),
355 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
356 			      SNDRV_PCM_FMTBIT_S32_LE),
357 	.rates =	     (SNDRV_PCM_RATE_32000 |
358 			      SNDRV_PCM_RATE_44100 |
359 			      SNDRV_PCM_RATE_48000 |
360 			      SNDRV_PCM_RATE_64000 |
361 			      SNDRV_PCM_RATE_88200 |
362 			      SNDRV_PCM_RATE_96000),
363 	.rate_min =	     32000,
364 	.rate_max =	     96000,
365 	.channels_min =	     2,
366 	.channels_max =	     2,
367 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
368 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
369 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
370 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
371 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
372 	.fifo_size =	     0,
373 };
374 
375 /*
376  * Digital input capabilities (S/PDIF)
377  */
378 static const struct snd_pcm_hardware snd_rme96_capture_spdif_info =
379 {
380 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
381 			      SNDRV_PCM_INFO_MMAP_VALID |
382 			      SNDRV_PCM_INFO_SYNC_START |
383 			      SNDRV_PCM_INFO_RESUME |
384 			      SNDRV_PCM_INFO_INTERLEAVED |
385 			      SNDRV_PCM_INFO_PAUSE),
386 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
387 			      SNDRV_PCM_FMTBIT_S32_LE),
388 	.rates =	     (SNDRV_PCM_RATE_32000 |
389 			      SNDRV_PCM_RATE_44100 |
390 			      SNDRV_PCM_RATE_48000 |
391 			      SNDRV_PCM_RATE_64000 |
392 			      SNDRV_PCM_RATE_88200 |
393 			      SNDRV_PCM_RATE_96000),
394 	.rate_min =	     32000,
395 	.rate_max =	     96000,
396 	.channels_min =	     2,
397 	.channels_max =	     2,
398 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
399 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
400 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
401 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
402 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
403 	.fifo_size =	     0,
404 };
405 
406 /*
407  * Digital output capabilities (ADAT)
408  */
409 static const struct snd_pcm_hardware snd_rme96_playback_adat_info =
410 {
411 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
412 			      SNDRV_PCM_INFO_MMAP_VALID |
413 			      SNDRV_PCM_INFO_SYNC_START |
414 			      SNDRV_PCM_INFO_RESUME |
415 			      SNDRV_PCM_INFO_INTERLEAVED |
416 			      SNDRV_PCM_INFO_PAUSE),
417 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
418 			      SNDRV_PCM_FMTBIT_S32_LE),
419 	.rates =             (SNDRV_PCM_RATE_44100 |
420 			      SNDRV_PCM_RATE_48000),
421 	.rate_min =          44100,
422 	.rate_max =          48000,
423 	.channels_min =      8,
424 	.channels_max =	     8,
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 input capabilities (ADAT)
435  */
436 static const struct snd_pcm_hardware snd_rme96_capture_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  * The CDATA, CCLK and CLATCH bits can be used to write to the SPI interface
462  * of the AD1852 or AD1852 D/A converter on the board.  CDATA must be set up
463  * on the falling edge of CCLK and be stable on the rising edge.  The rising
464  * edge of CLATCH after the last data bit clocks in the whole data word.
465  * A fast processor could probably drive the SPI interface faster than the
466  * DAC can handle (3MHz for the 1855, unknown for the 1852).  The udelay(1)
467  * limits the data rate to 500KHz and only causes a delay of 33 microsecs.
468  *
469  * NOTE: increased delay from 1 to 10, since there where problems setting
470  * the volume.
471  */
472 static void
473 snd_rme96_write_SPI(struct rme96 *rme96, u16 val)
474 {
475 	int i;
476 
477 	for (i = 0; i < 16; i++) {
478 		if (val & 0x8000) {
479 			rme96->areg |= RME96_AR_CDATA;
480 		} else {
481 			rme96->areg &= ~RME96_AR_CDATA;
482 		}
483 		rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CLATCH);
484 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
485 		udelay(10);
486 		rme96->areg |= RME96_AR_CCLK;
487 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
488 		udelay(10);
489 		val <<= 1;
490 	}
491 	rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CDATA);
492 	rme96->areg |= RME96_AR_CLATCH;
493 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
494 	udelay(10);
495 	rme96->areg &= ~RME96_AR_CLATCH;
496 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
497 }
498 
499 static void
500 snd_rme96_apply_dac_volume(struct rme96 *rme96)
501 {
502 	if (RME96_DAC_IS_1852(rme96)) {
503 		snd_rme96_write_SPI(rme96, (rme96->vol[0] << 2) | 0x0);
504 		snd_rme96_write_SPI(rme96, (rme96->vol[1] << 2) | 0x2);
505 	} else if (RME96_DAC_IS_1855(rme96)) {
506 		snd_rme96_write_SPI(rme96, (rme96->vol[0] & 0x3FF) | 0x000);
507 		snd_rme96_write_SPI(rme96, (rme96->vol[1] & 0x3FF) | 0x400);
508 	}
509 }
510 
511 static void
512 snd_rme96_reset_dac(struct rme96 *rme96)
513 {
514 	writel(rme96->wcreg | RME96_WCR_PD,
515 	       rme96->iobase + RME96_IO_CONTROL_REGISTER);
516 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
517 }
518 
519 static int
520 snd_rme96_getmontracks(struct rme96 *rme96)
521 {
522 	return ((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_0) & 1) +
523 		(((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_1) & 1) << 1);
524 }
525 
526 static int
527 snd_rme96_setmontracks(struct rme96 *rme96,
528 		       int montracks)
529 {
530 	if (montracks & 1) {
531 		rme96->wcreg |= RME96_WCR_MONITOR_0;
532 	} else {
533 		rme96->wcreg &= ~RME96_WCR_MONITOR_0;
534 	}
535 	if (montracks & 2) {
536 		rme96->wcreg |= RME96_WCR_MONITOR_1;
537 	} else {
538 		rme96->wcreg &= ~RME96_WCR_MONITOR_1;
539 	}
540 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
541 	return 0;
542 }
543 
544 static int
545 snd_rme96_getattenuation(struct rme96 *rme96)
546 {
547 	return ((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_0) & 1) +
548 		(((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_1) & 1) << 1);
549 }
550 
551 static int
552 snd_rme96_setattenuation(struct rme96 *rme96,
553 			 int attenuation)
554 {
555 	switch (attenuation) {
556 	case 0:
557 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) &
558 			~RME96_WCR_GAIN_1;
559 		break;
560 	case 1:
561 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) &
562 			~RME96_WCR_GAIN_1;
563 		break;
564 	case 2:
565 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) |
566 			RME96_WCR_GAIN_1;
567 		break;
568 	case 3:
569 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) |
570 			RME96_WCR_GAIN_1;
571 		break;
572 	default:
573 		return -EINVAL;
574 	}
575 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
576 	return 0;
577 }
578 
579 static int
580 snd_rme96_capture_getrate(struct rme96 *rme96,
581 			  int *is_adat)
582 {
583 	int n, rate;
584 
585 	*is_adat = 0;
586 	if (rme96->areg & RME96_AR_ANALOG) {
587 		/* Analog input, overrides S/PDIF setting */
588 		n = ((rme96->areg >> RME96_AR_BITPOS_F0) & 1) +
589 			(((rme96->areg >> RME96_AR_BITPOS_F1) & 1) << 1);
590 		switch (n) {
591 		case 1:
592 			rate = 32000;
593 			break;
594 		case 2:
595 			rate = 44100;
596 			break;
597 		case 3:
598 			rate = 48000;
599 			break;
600 		default:
601 			return -1;
602 		}
603 		return (rme96->areg & RME96_AR_BITPOS_F2) ? rate << 1 : rate;
604 	}
605 
606 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
607 	if (rme96->rcreg & RME96_RCR_LOCK) {
608 		/* ADAT rate */
609 		*is_adat = 1;
610 		if (rme96->rcreg & RME96_RCR_T_OUT) {
611 			return 48000;
612 		}
613 		return 44100;
614 	}
615 
616 	if (rme96->rcreg & RME96_RCR_VERF) {
617 		return -1;
618 	}
619 
620 	/* S/PDIF rate */
621 	n = ((rme96->rcreg >> RME96_RCR_BITPOS_F0) & 1) +
622 		(((rme96->rcreg >> RME96_RCR_BITPOS_F1) & 1) << 1) +
623 		(((rme96->rcreg >> RME96_RCR_BITPOS_F2) & 1) << 2);
624 
625 	switch (n) {
626 	case 0:
627 		if (rme96->rcreg & RME96_RCR_T_OUT) {
628 			return 64000;
629 		}
630 		return -1;
631 	case 3: return 96000;
632 	case 4: return 88200;
633 	case 5: return 48000;
634 	case 6: return 44100;
635 	case 7: return 32000;
636 	default:
637 		break;
638 	}
639 	return -1;
640 }
641 
642 static int
643 snd_rme96_playback_getrate(struct rme96 *rme96)
644 {
645 	int rate, dummy;
646 
647 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
648 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
649 		rate = snd_rme96_capture_getrate(rme96, &dummy);
650 		if (rate > 0) {
651 			/* slave clock */
652 			return rate;
653 		}
654 	}
655 
656 	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
657 		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
658 	switch (rate) {
659 	case 1:
660 		rate = 32000;
661 		break;
662 	case 2:
663 		rate = 44100;
664 		break;
665 	case 3:
666 		rate = 48000;
667 		break;
668 	default:
669 		return -1;
670 	}
671 	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
672 }
673 
674 static int
675 snd_rme96_playback_setrate(struct rme96 *rme96,
676 			   int rate)
677 {
678 	int ds;
679 
680 	ds = rme96->wcreg & RME96_WCR_DS;
681 	switch (rate) {
682 	case 32000:
683 		rme96->wcreg &= ~RME96_WCR_DS;
684 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
685 			~RME96_WCR_FREQ_1;
686 		break;
687 	case 44100:
688 		rme96->wcreg &= ~RME96_WCR_DS;
689 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
690 			~RME96_WCR_FREQ_0;
691 		break;
692 	case 48000:
693 		rme96->wcreg &= ~RME96_WCR_DS;
694 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
695 			RME96_WCR_FREQ_1;
696 		break;
697 	case 64000:
698 		rme96->wcreg |= RME96_WCR_DS;
699 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
700 			~RME96_WCR_FREQ_1;
701 		break;
702 	case 88200:
703 		rme96->wcreg |= RME96_WCR_DS;
704 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
705 			~RME96_WCR_FREQ_0;
706 		break;
707 	case 96000:
708 		rme96->wcreg |= RME96_WCR_DS;
709 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
710 			RME96_WCR_FREQ_1;
711 		break;
712 	default:
713 		return -EINVAL;
714 	}
715 	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
716 	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
717 	{
718 		/* change to/from double-speed: reset the DAC (if available) */
719 		snd_rme96_reset_dac(rme96);
720 		return 1; /* need to restore volume */
721 	} else {
722 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
723 		return 0;
724 	}
725 }
726 
727 static int
728 snd_rme96_capture_analog_setrate(struct rme96 *rme96,
729 				 int rate)
730 {
731 	switch (rate) {
732 	case 32000:
733 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
734 			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
735 		break;
736 	case 44100:
737 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
738 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
739 		break;
740 	case 48000:
741 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
742 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
743 		break;
744 	case 64000:
745 		if (rme96->rev < 4) {
746 			return -EINVAL;
747 		}
748 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
749 			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
750 		break;
751 	case 88200:
752 		if (rme96->rev < 4) {
753 			return -EINVAL;
754 		}
755 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
756 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
757 		break;
758 	case 96000:
759 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
760 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
761 		break;
762 	default:
763 		return -EINVAL;
764 	}
765 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
766 	return 0;
767 }
768 
769 static int
770 snd_rme96_setclockmode(struct rme96 *rme96,
771 		       int mode)
772 {
773 	switch (mode) {
774 	case RME96_CLOCKMODE_SLAVE:
775 	        /* AutoSync */
776 		rme96->wcreg &= ~RME96_WCR_MASTER;
777 		rme96->areg &= ~RME96_AR_WSEL;
778 		break;
779 	case RME96_CLOCKMODE_MASTER:
780 	        /* Internal */
781 		rme96->wcreg |= RME96_WCR_MASTER;
782 		rme96->areg &= ~RME96_AR_WSEL;
783 		break;
784 	case RME96_CLOCKMODE_WORDCLOCK:
785 		/* Word clock is a master mode */
786 		rme96->wcreg |= RME96_WCR_MASTER;
787 		rme96->areg |= RME96_AR_WSEL;
788 		break;
789 	default:
790 		return -EINVAL;
791 	}
792 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
793 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
794 	return 0;
795 }
796 
797 static int
798 snd_rme96_getclockmode(struct rme96 *rme96)
799 {
800 	if (rme96->areg & RME96_AR_WSEL) {
801 		return RME96_CLOCKMODE_WORDCLOCK;
802 	}
803 	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
804 		RME96_CLOCKMODE_SLAVE;
805 }
806 
807 static int
808 snd_rme96_setinputtype(struct rme96 *rme96,
809 		       int type)
810 {
811 	int n;
812 
813 	switch (type) {
814 	case RME96_INPUT_OPTICAL:
815 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
816 			~RME96_WCR_INP_1;
817 		break;
818 	case RME96_INPUT_COAXIAL:
819 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
820 			~RME96_WCR_INP_1;
821 		break;
822 	case RME96_INPUT_INTERNAL:
823 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
824 			RME96_WCR_INP_1;
825 		break;
826 	case RME96_INPUT_XLR:
827 		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
828 		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
829 		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
830 		     rme96->rev > 4))
831 		{
832 			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
833 			return -EINVAL;
834 		}
835 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
836 			RME96_WCR_INP_1;
837 		break;
838 	case RME96_INPUT_ANALOG:
839 		if (!RME96_HAS_ANALOG_IN(rme96)) {
840 			return -EINVAL;
841 		}
842 		rme96->areg |= RME96_AR_ANALOG;
843 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
844 		if (rme96->rev < 4) {
845 			/*
846 			 * Revision less than 004 does not support 64 and
847 			 * 88.2 kHz
848 			 */
849 			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
850 				snd_rme96_capture_analog_setrate(rme96, 44100);
851 			}
852 			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
853 				snd_rme96_capture_analog_setrate(rme96, 32000);
854 			}
855 		}
856 		return 0;
857 	default:
858 		return -EINVAL;
859 	}
860 	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
861 		rme96->areg &= ~RME96_AR_ANALOG;
862 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
863 	}
864 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
865 	return 0;
866 }
867 
868 static int
869 snd_rme96_getinputtype(struct rme96 *rme96)
870 {
871 	if (rme96->areg & RME96_AR_ANALOG) {
872 		return RME96_INPUT_ANALOG;
873 	}
874 	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
875 		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
876 }
877 
878 static void
879 snd_rme96_setframelog(struct rme96 *rme96,
880 		      int n_channels,
881 		      int is_playback)
882 {
883 	int frlog;
884 
885 	if (n_channels == 2) {
886 		frlog = 1;
887 	} else {
888 		/* assume 8 channels */
889 		frlog = 3;
890 	}
891 	if (is_playback) {
892 		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
893 		rme96->playback_frlog = frlog;
894 	} else {
895 		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
896 		rme96->capture_frlog = frlog;
897 	}
898 }
899 
900 static int
901 snd_rme96_playback_setformat(struct rme96 *rme96, snd_pcm_format_t format)
902 {
903 	switch (format) {
904 	case SNDRV_PCM_FORMAT_S16_LE:
905 		rme96->wcreg &= ~RME96_WCR_MODE24;
906 		break;
907 	case SNDRV_PCM_FORMAT_S32_LE:
908 		rme96->wcreg |= RME96_WCR_MODE24;
909 		break;
910 	default:
911 		return -EINVAL;
912 	}
913 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
914 	return 0;
915 }
916 
917 static int
918 snd_rme96_capture_setformat(struct rme96 *rme96, snd_pcm_format_t format)
919 {
920 	switch (format) {
921 	case SNDRV_PCM_FORMAT_S16_LE:
922 		rme96->wcreg &= ~RME96_WCR_MODE24_2;
923 		break;
924 	case SNDRV_PCM_FORMAT_S32_LE:
925 		rme96->wcreg |= RME96_WCR_MODE24_2;
926 		break;
927 	default:
928 		return -EINVAL;
929 	}
930 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
931 	return 0;
932 }
933 
934 static void
935 snd_rme96_set_period_properties(struct rme96 *rme96,
936 				size_t period_bytes)
937 {
938 	switch (period_bytes) {
939 	case RME96_LARGE_BLOCK_SIZE:
940 		rme96->wcreg &= ~RME96_WCR_ISEL;
941 		break;
942 	case RME96_SMALL_BLOCK_SIZE:
943 		rme96->wcreg |= RME96_WCR_ISEL;
944 		break;
945 	default:
946 		snd_BUG();
947 		break;
948 	}
949 	rme96->wcreg &= ~RME96_WCR_IDIS;
950 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
951 }
952 
953 static int
954 snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
955 			     struct snd_pcm_hw_params *params)
956 {
957 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
958 	struct snd_pcm_runtime *runtime = substream->runtime;
959 	int err, rate, dummy;
960 	bool apply_dac_volume = false;
961 
962 	runtime->dma_area = (void __force *)(rme96->iobase +
963 					     RME96_IO_PLAY_BUFFER);
964 	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
965 	runtime->dma_bytes = RME96_BUFFER_SIZE;
966 
967 	scoped_guard(spinlock_irq, &rme96->lock) {
968 		rate = 0;
969 		if (!(rme96->wcreg & RME96_WCR_MASTER) &&
970 		    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG)
971 			rate = snd_rme96_capture_getrate(rme96, &dummy);
972 		if (rate > 0) {
973 			/* slave clock */
974 			if ((int)params_rate(params) != rate)
975 				return -EIO;
976 		} else {
977 			err = snd_rme96_playback_setrate(rme96, params_rate(params));
978 			if (err < 0)
979 				return err;
980 			apply_dac_volume = err > 0; /* need to restore volume later? */
981 		}
982 
983 		err = snd_rme96_playback_setformat(rme96, params_format(params));
984 		if (err < 0)
985 			goto error;
986 		snd_rme96_setframelog(rme96, params_channels(params), 1);
987 		if (rme96->capture_periodsize != 0) {
988 			if (params_period_size(params) << rme96->playback_frlog !=
989 			    rme96->capture_periodsize) {
990 				err = -EBUSY;
991 				goto error;
992 			}
993 		}
994 		rme96->playback_periodsize =
995 			params_period_size(params) << rme96->playback_frlog;
996 		snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
997 		/* S/PDIF setup */
998 		if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
999 			rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
1000 			writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1001 		}
1002 
1003 		err = 0;
1004 	}
1005  error:
1006 	if (apply_dac_volume) {
1007 		usleep_range(3000, 10000);
1008 		snd_rme96_apply_dac_volume(rme96);
1009 	}
1010 
1011 	return err;
1012 }
1013 
1014 static int
1015 snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
1016 			    struct snd_pcm_hw_params *params)
1017 {
1018 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1019 	struct snd_pcm_runtime *runtime = substream->runtime;
1020 	int err, isadat, rate;
1021 
1022 	runtime->dma_area = (void __force *)(rme96->iobase +
1023 					     RME96_IO_REC_BUFFER);
1024 	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
1025 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1026 
1027 	guard(spinlock_irq)(&rme96->lock);
1028 	err = snd_rme96_capture_setformat(rme96, params_format(params));
1029 	if (err < 0)
1030 		return err;
1031 	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1032 		err = snd_rme96_capture_analog_setrate(rme96, params_rate(params));
1033 		if (err < 0)
1034 			return err;
1035 	} else {
1036 		rate = snd_rme96_capture_getrate(rme96, &isadat);
1037 		if (rate > 0) {
1038 			if ((int)params_rate(params) != rate)
1039 				return -EIO;
1040 			if ((isadat && runtime->hw.channels_min == 2) ||
1041 			    (!isadat && runtime->hw.channels_min == 8))
1042 				return -EIO;
1043 		}
1044         }
1045 	snd_rme96_setframelog(rme96, params_channels(params), 0);
1046 	if (rme96->playback_periodsize != 0) {
1047 		if (params_period_size(params) << rme96->capture_frlog !=
1048 		    rme96->playback_periodsize)
1049 			return -EBUSY;
1050 	}
1051 	rme96->capture_periodsize =
1052 		params_period_size(params) << rme96->capture_frlog;
1053 	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
1054 
1055 	return 0;
1056 }
1057 
1058 static void
1059 snd_rme96_trigger(struct rme96 *rme96,
1060 		  int op)
1061 {
1062 	if (op & RME96_TB_RESET_PLAYPOS)
1063 		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1064 	if (op & RME96_TB_RESET_CAPTUREPOS)
1065 		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1066 	if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) {
1067 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1068 		if (rme96->rcreg & RME96_RCR_IRQ)
1069 			writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1070 	}
1071 	if (op & RME96_TB_CLEAR_CAPTURE_IRQ) {
1072 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1073 		if (rme96->rcreg & RME96_RCR_IRQ_2)
1074 			writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1075 	}
1076 	if (op & RME96_TB_START_PLAYBACK)
1077 		rme96->wcreg |= RME96_WCR_START;
1078 	if (op & RME96_TB_STOP_PLAYBACK)
1079 		rme96->wcreg &= ~RME96_WCR_START;
1080 	if (op & RME96_TB_START_CAPTURE)
1081 		rme96->wcreg |= RME96_WCR_START_2;
1082 	if (op & RME96_TB_STOP_CAPTURE)
1083 		rme96->wcreg &= ~RME96_WCR_START_2;
1084 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1085 }
1086 
1087 
1088 
1089 static irqreturn_t
1090 snd_rme96_interrupt(int irq,
1091 		    void *dev_id)
1092 {
1093 	struct rme96 *rme96 = (struct rme96 *)dev_id;
1094 
1095 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1096 	/* fastpath out, to ease interrupt sharing */
1097 	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
1098 	      (rme96->rcreg & RME96_RCR_IRQ_2)))
1099 	{
1100 		return IRQ_NONE;
1101 	}
1102 
1103 	if (rme96->rcreg & RME96_RCR_IRQ) {
1104 		/* playback */
1105                 snd_pcm_period_elapsed(rme96->playback_substream);
1106 		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1107 	}
1108 	if (rme96->rcreg & RME96_RCR_IRQ_2) {
1109 		/* capture */
1110 		snd_pcm_period_elapsed(rme96->capture_substream);
1111 		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1112 	}
1113 	return IRQ_HANDLED;
1114 }
1115 
1116 static const unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };
1117 
1118 static const struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {
1119 	.count = ARRAY_SIZE(period_bytes),
1120 	.list = period_bytes,
1121 	.mask = 0
1122 };
1123 
1124 static void
1125 rme96_set_buffer_size_constraint(struct rme96 *rme96,
1126 				 struct snd_pcm_runtime *runtime)
1127 {
1128 	unsigned int size;
1129 
1130 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1131 				     RME96_BUFFER_SIZE);
1132 	size = rme96->playback_periodsize;
1133 	if (!size)
1134 		size = rme96->capture_periodsize;
1135 	if (size)
1136 		snd_pcm_hw_constraint_single(runtime,
1137 					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1138 					     size);
1139 	else
1140 		snd_pcm_hw_constraint_list(runtime, 0,
1141 					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1142 					   &hw_constraints_period_bytes);
1143 }
1144 
1145 static int
1146 snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
1147 {
1148         int rate, dummy;
1149 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1150 	struct snd_pcm_runtime *runtime = substream->runtime;
1151 
1152 	snd_pcm_set_sync(substream);
1153 	scoped_guard(spinlock_irq, &rme96->lock) {
1154 		if (rme96->playback_substream)
1155 			return -EBUSY;
1156 		rme96->wcreg &= ~RME96_WCR_ADAT;
1157 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1158 		rme96->playback_substream = substream;
1159 	}
1160 
1161 	runtime->hw = snd_rme96_playback_spdif_info;
1162 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1163 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1164 		rate = snd_rme96_capture_getrate(rme96, &dummy);
1165 		if (rate > 0) {
1166 			/* slave clock */
1167 			runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1168 			runtime->hw.rate_min = rate;
1169 			runtime->hw.rate_max = rate;
1170 		}
1171 	}
1172 	rme96_set_buffer_size_constraint(rme96, runtime);
1173 
1174 	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
1175 	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1176 	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1177 		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1178 	return 0;
1179 }
1180 
1181 static int
1182 snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
1183 {
1184         int isadat, rate;
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 	runtime->hw = snd_rme96_capture_spdif_info;
1190 	if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1191 		rate = snd_rme96_capture_getrate(rme96, &isadat);
1192 		if (rate > 0) {
1193 			if (isadat)
1194 				return -EIO;
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 	}
1200 
1201 	scoped_guard(spinlock_irq, &rme96->lock) {
1202 		if (rme96->capture_substream)
1203 			return -EBUSY;
1204 		rme96->capture_substream = substream;
1205 	}
1206 
1207 	rme96_set_buffer_size_constraint(rme96, runtime);
1208 	return 0;
1209 }
1210 
1211 static int
1212 snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
1213 {
1214         int rate, dummy;
1215 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1216 	struct snd_pcm_runtime *runtime = substream->runtime;
1217 
1218 	snd_pcm_set_sync(substream);
1219 	scoped_guard(spinlock_irq, &rme96->lock) {
1220 		if (rme96->playback_substream)
1221 			return -EBUSY;
1222 		rme96->wcreg |= RME96_WCR_ADAT;
1223 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1224 		rme96->playback_substream = substream;
1225 	}
1226 
1227 	runtime->hw = snd_rme96_playback_adat_info;
1228 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1229 	    snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG) {
1230 		rate = snd_rme96_capture_getrate(rme96, &dummy);
1231 		if (rate > 0) {
1232 			/* slave clock */
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 	rme96_set_buffer_size_constraint(rme96, runtime);
1240 	return 0;
1241 }
1242 
1243 static int
1244 snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
1245 {
1246         int isadat, rate;
1247 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1248 	struct snd_pcm_runtime *runtime = substream->runtime;
1249 
1250 	snd_pcm_set_sync(substream);
1251 	runtime->hw = snd_rme96_capture_adat_info;
1252         if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1253                 /* makes no sense to use analog input. Note that analog
1254                    expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
1255                 return -EIO;
1256         }
1257 	rate = snd_rme96_capture_getrate(rme96, &isadat);
1258 	if (rate > 0) {
1259                 if (!isadat) {
1260                         return -EIO;
1261                 }
1262                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1263                 runtime->hw.rate_min = rate;
1264                 runtime->hw.rate_max = rate;
1265         }
1266 
1267 	scoped_guard(spinlock_irq, &rme96->lock) {
1268 		if (rme96->capture_substream)
1269 			return -EBUSY;
1270 		rme96->capture_substream = substream;
1271 	}
1272 
1273 	rme96_set_buffer_size_constraint(rme96, runtime);
1274 	return 0;
1275 }
1276 
1277 static int
1278 snd_rme96_playback_close(struct snd_pcm_substream *substream)
1279 {
1280 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1281 	int spdif = 0;
1282 
1283 	scoped_guard(spinlock_irq, &rme96->lock) {
1284 		if (RME96_ISPLAYING(rme96))
1285 			snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1286 		rme96->playback_substream = NULL;
1287 		rme96->playback_periodsize = 0;
1288 		spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
1289 	}
1290 	if (spdif) {
1291 		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1292 		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1293 			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1294 	}
1295 	return 0;
1296 }
1297 
1298 static int
1299 snd_rme96_capture_close(struct snd_pcm_substream *substream)
1300 {
1301 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1302 
1303 	guard(spinlock_irq)(&rme96->lock);
1304 	if (RME96_ISRECORDING(rme96)) {
1305 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1306 	}
1307 	rme96->capture_substream = NULL;
1308 	rme96->capture_periodsize = 0;
1309 	return 0;
1310 }
1311 
1312 static int
1313 snd_rme96_playback_prepare(struct snd_pcm_substream *substream)
1314 {
1315 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1316 
1317 	guard(spinlock_irq)(&rme96->lock);
1318 	if (RME96_ISPLAYING(rme96)) {
1319 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1320 	}
1321 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1322 	return 0;
1323 }
1324 
1325 static int
1326 snd_rme96_capture_prepare(struct snd_pcm_substream *substream)
1327 {
1328 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1329 
1330 	guard(spinlock_irq)(&rme96->lock);
1331 	if (RME96_ISRECORDING(rme96)) {
1332 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1333 	}
1334 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1335 	return 0;
1336 }
1337 
1338 static int
1339 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
1340 			   int cmd)
1341 {
1342 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1343 	struct snd_pcm_substream *s;
1344 	bool sync;
1345 
1346 	snd_pcm_group_for_each_entry(s, substream) {
1347 		if (snd_pcm_substream_chip(s) == rme96)
1348 			snd_pcm_trigger_done(s, substream);
1349 	}
1350 
1351 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1352 	       (rme96->playback_substream->group ==
1353 		rme96->capture_substream->group);
1354 
1355 	switch (cmd) {
1356 	case SNDRV_PCM_TRIGGER_START:
1357 		if (!RME96_ISPLAYING(rme96)) {
1358 			if (substream != rme96->playback_substream)
1359 				return -EBUSY;
1360 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1361 						 : RME96_START_PLAYBACK);
1362 		}
1363 		break;
1364 
1365 	case SNDRV_PCM_TRIGGER_SUSPEND:
1366 	case SNDRV_PCM_TRIGGER_STOP:
1367 		if (RME96_ISPLAYING(rme96)) {
1368 			if (substream != rme96->playback_substream)
1369 				return -EBUSY;
1370 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1371 						 :  RME96_STOP_PLAYBACK);
1372 		}
1373 		break;
1374 
1375 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1376 		if (RME96_ISPLAYING(rme96))
1377 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1378 						 : RME96_STOP_PLAYBACK);
1379 		break;
1380 
1381 	case SNDRV_PCM_TRIGGER_RESUME:
1382 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1383 		if (!RME96_ISPLAYING(rme96))
1384 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1385 						 : RME96_RESUME_PLAYBACK);
1386 		break;
1387 
1388 	default:
1389 		return -EINVAL;
1390 	}
1391 
1392 	return 0;
1393 }
1394 
1395 static int
1396 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
1397 			  int cmd)
1398 {
1399 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1400 	struct snd_pcm_substream *s;
1401 	bool sync;
1402 
1403 	snd_pcm_group_for_each_entry(s, substream) {
1404 		if (snd_pcm_substream_chip(s) == rme96)
1405 			snd_pcm_trigger_done(s, substream);
1406 	}
1407 
1408 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1409 	       (rme96->playback_substream->group ==
1410 		rme96->capture_substream->group);
1411 
1412 	switch (cmd) {
1413 	case SNDRV_PCM_TRIGGER_START:
1414 		if (!RME96_ISRECORDING(rme96)) {
1415 			if (substream != rme96->capture_substream)
1416 				return -EBUSY;
1417 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1418 						 : RME96_START_CAPTURE);
1419 		}
1420 		break;
1421 
1422 	case SNDRV_PCM_TRIGGER_SUSPEND:
1423 	case SNDRV_PCM_TRIGGER_STOP:
1424 		if (RME96_ISRECORDING(rme96)) {
1425 			if (substream != rme96->capture_substream)
1426 				return -EBUSY;
1427 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1428 						 : RME96_STOP_CAPTURE);
1429 		}
1430 		break;
1431 
1432 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1433 		if (RME96_ISRECORDING(rme96))
1434 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1435 						 : RME96_STOP_CAPTURE);
1436 		break;
1437 
1438 	case SNDRV_PCM_TRIGGER_RESUME:
1439 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1440 		if (!RME96_ISRECORDING(rme96))
1441 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1442 						 : RME96_RESUME_CAPTURE);
1443 		break;
1444 
1445 	default:
1446 		return -EINVAL;
1447 	}
1448 
1449 	return 0;
1450 }
1451 
1452 static snd_pcm_uframes_t
1453 snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
1454 {
1455 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1456 	return snd_rme96_playback_ptr(rme96);
1457 }
1458 
1459 static snd_pcm_uframes_t
1460 snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
1461 {
1462 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1463 	return snd_rme96_capture_ptr(rme96);
1464 }
1465 
1466 static const struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
1467 	.open =		snd_rme96_playback_spdif_open,
1468 	.close =	snd_rme96_playback_close,
1469 	.hw_params =	snd_rme96_playback_hw_params,
1470 	.prepare =	snd_rme96_playback_prepare,
1471 	.trigger =	snd_rme96_playback_trigger,
1472 	.pointer =	snd_rme96_playback_pointer,
1473 	.copy =		snd_rme96_playback_copy,
1474 	.fill_silence =	snd_rme96_playback_silence,
1475 	.mmap =		snd_pcm_lib_mmap_iomem,
1476 };
1477 
1478 static const struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
1479 	.open =		snd_rme96_capture_spdif_open,
1480 	.close =	snd_rme96_capture_close,
1481 	.hw_params =	snd_rme96_capture_hw_params,
1482 	.prepare =	snd_rme96_capture_prepare,
1483 	.trigger =	snd_rme96_capture_trigger,
1484 	.pointer =	snd_rme96_capture_pointer,
1485 	.copy =		snd_rme96_capture_copy,
1486 	.mmap =		snd_pcm_lib_mmap_iomem,
1487 };
1488 
1489 static const struct snd_pcm_ops snd_rme96_playback_adat_ops = {
1490 	.open =		snd_rme96_playback_adat_open,
1491 	.close =	snd_rme96_playback_close,
1492 	.hw_params =	snd_rme96_playback_hw_params,
1493 	.prepare =	snd_rme96_playback_prepare,
1494 	.trigger =	snd_rme96_playback_trigger,
1495 	.pointer =	snd_rme96_playback_pointer,
1496 	.copy =		snd_rme96_playback_copy,
1497 	.fill_silence =	snd_rme96_playback_silence,
1498 	.mmap =		snd_pcm_lib_mmap_iomem,
1499 };
1500 
1501 static const struct snd_pcm_ops snd_rme96_capture_adat_ops = {
1502 	.open =		snd_rme96_capture_adat_open,
1503 	.close =	snd_rme96_capture_close,
1504 	.hw_params =	snd_rme96_capture_hw_params,
1505 	.prepare =	snd_rme96_capture_prepare,
1506 	.trigger =	snd_rme96_capture_trigger,
1507 	.pointer =	snd_rme96_capture_pointer,
1508 	.copy =		snd_rme96_capture_copy,
1509 	.mmap =		snd_pcm_lib_mmap_iomem,
1510 };
1511 
1512 static void
1513 snd_rme96_free(struct rme96 *rme96)
1514 {
1515 	if (rme96->irq >= 0) {
1516 		snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1517 		rme96->areg &= ~RME96_AR_DAC_EN;
1518 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1519 	}
1520 	vfree(rme96->playback_suspend_buffer);
1521 	vfree(rme96->capture_suspend_buffer);
1522 }
1523 
1524 static void
1525 snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
1526 {
1527 	struct rme96 *rme96 = pcm->private_data;
1528 	rme96->spdif_pcm = NULL;
1529 }
1530 
1531 static void
1532 snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
1533 {
1534 	struct rme96 *rme96 = pcm->private_data;
1535 	rme96->adat_pcm = NULL;
1536 }
1537 
1538 static int
1539 snd_rme96_create(struct rme96 *rme96)
1540 {
1541 	struct pci_dev *pci = rme96->pci;
1542 	int err;
1543 
1544 	rme96->irq = -1;
1545 	spin_lock_init(&rme96->lock);
1546 
1547 	err = pcim_enable_device(pci);
1548 	if (err < 0)
1549 		return err;
1550 
1551 	err = pcim_request_all_regions(pci, "RME96");
1552 	if (err < 0)
1553 		return err;
1554 	rme96->port = pci_resource_start(rme96->pci, 0);
1555 
1556 	rme96->iobase = devm_ioremap(&pci->dev, rme96->port, RME96_IO_SIZE);
1557 	if (!rme96->iobase) {
1558 		dev_err(rme96->card->dev,
1559 			"unable to remap memory region 0x%lx-0x%lx\n",
1560 			rme96->port, rme96->port + RME96_IO_SIZE - 1);
1561 		return -EBUSY;
1562 	}
1563 
1564 	if (devm_request_irq(&pci->dev, pci->irq, snd_rme96_interrupt,
1565 			     IRQF_SHARED, KBUILD_MODNAME, rme96)) {
1566 		dev_err(rme96->card->dev, "unable to grab IRQ %d\n", pci->irq);
1567 		return -EBUSY;
1568 	}
1569 	rme96->irq = pci->irq;
1570 	rme96->card->sync_irq = rme96->irq;
1571 
1572 	/* read the card's revision number */
1573 	pci_read_config_byte(pci, 8, &rme96->rev);
1574 
1575 	/* set up ALSA pcm device for S/PDIF */
1576 	err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
1577 			  1, 1, &rme96->spdif_pcm);
1578 	if (err < 0)
1579 		return err;
1580 
1581 	rme96->spdif_pcm->private_data = rme96;
1582 	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
1583 	strscpy(rme96->spdif_pcm->name, "Digi96 IEC958");
1584 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
1585 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
1586 
1587 	rme96->spdif_pcm->info_flags = 0;
1588 
1589 	/* set up ALSA pcm device for ADAT */
1590 	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
1591 		/* ADAT is not available on the base model */
1592 		rme96->adat_pcm = NULL;
1593 	} else {
1594 		err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
1595 				  1, 1, &rme96->adat_pcm);
1596 		if (err < 0)
1597 			return err;
1598 		rme96->adat_pcm->private_data = rme96;
1599 		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
1600 		strscpy(rme96->adat_pcm->name, "Digi96 ADAT");
1601 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
1602 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
1603 
1604 		rme96->adat_pcm->info_flags = 0;
1605 	}
1606 
1607 	rme96->playback_periodsize = 0;
1608 	rme96->capture_periodsize = 0;
1609 
1610 	/* make sure playback/capture is stopped, if by some reason active */
1611 	snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1612 
1613 	/* set default values in registers */
1614 	rme96->wcreg =
1615 		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
1616 		RME96_WCR_SEL |    /* normal playback */
1617 		RME96_WCR_MASTER | /* set to master clock mode */
1618 		RME96_WCR_INP_0;   /* set coaxial input */
1619 
1620 	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */
1621 
1622 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1623 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1624 
1625 	/* reset the ADC */
1626 	writel(rme96->areg | RME96_AR_PD2,
1627 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
1628 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1629 
1630 	/* reset and enable the DAC (order is important). */
1631 	snd_rme96_reset_dac(rme96);
1632 	rme96->areg |= RME96_AR_DAC_EN;
1633 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1634 
1635 	/* reset playback and record buffer pointers */
1636 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1637 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1638 
1639 	/* reset volume */
1640 	rme96->vol[0] = rme96->vol[1] = 0;
1641 	if (RME96_HAS_ANALOG_OUT(rme96)) {
1642 		snd_rme96_apply_dac_volume(rme96);
1643 	}
1644 
1645 	/* init switch interface */
1646 	err = snd_rme96_create_switches(rme96->card, rme96);
1647 	if (err < 0)
1648 		return err;
1649 
1650         /* init proc interface */
1651 	snd_rme96_proc_init(rme96);
1652 
1653 	return 0;
1654 }
1655 
1656 /*
1657  * proc interface
1658  */
1659 
1660 static void
1661 snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1662 {
1663 	int n;
1664 	struct rme96 *rme96 = entry->private_data;
1665 
1666 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1667 
1668 	snd_iprintf(buffer, rme96->card->longname);
1669 	snd_iprintf(buffer, " (index #%d)\n", rme96->card->number + 1);
1670 
1671 	snd_iprintf(buffer, "\nGeneral settings\n");
1672 	if (rme96->wcreg & RME96_WCR_IDIS) {
1673 		snd_iprintf(buffer, "  period size: N/A (interrupts "
1674 			    "disabled)\n");
1675 	} else if (rme96->wcreg & RME96_WCR_ISEL) {
1676 		snd_iprintf(buffer, "  period size: 2048 bytes\n");
1677 	} else {
1678 		snd_iprintf(buffer, "  period size: 8192 bytes\n");
1679 	}
1680 	snd_iprintf(buffer, "\nInput settings\n");
1681 	switch (snd_rme96_getinputtype(rme96)) {
1682 	case RME96_INPUT_OPTICAL:
1683 		snd_iprintf(buffer, "  input: optical");
1684 		break;
1685 	case RME96_INPUT_COAXIAL:
1686 		snd_iprintf(buffer, "  input: coaxial");
1687 		break;
1688 	case RME96_INPUT_INTERNAL:
1689 		snd_iprintf(buffer, "  input: internal");
1690 		break;
1691 	case RME96_INPUT_XLR:
1692 		snd_iprintf(buffer, "  input: XLR");
1693 		break;
1694 	case RME96_INPUT_ANALOG:
1695 		snd_iprintf(buffer, "  input: analog");
1696 		break;
1697 	}
1698 	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1699 		snd_iprintf(buffer, "\n  sample rate: no valid signal\n");
1700 	} else {
1701 		if (n) {
1702 			snd_iprintf(buffer, " (8 channels)\n");
1703 		} else {
1704 			snd_iprintf(buffer, " (2 channels)\n");
1705 		}
1706 		snd_iprintf(buffer, "  sample rate: %d Hz\n",
1707 			    snd_rme96_capture_getrate(rme96, &n));
1708 	}
1709 	if (rme96->wcreg & RME96_WCR_MODE24_2) {
1710 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1711 	} else {
1712 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1713 	}
1714 
1715 	snd_iprintf(buffer, "\nOutput settings\n");
1716 	if (rme96->wcreg & RME96_WCR_SEL) {
1717 		snd_iprintf(buffer, "  output signal: normal playback\n");
1718 	} else {
1719 		snd_iprintf(buffer, "  output signal: same as input\n");
1720 	}
1721 	snd_iprintf(buffer, "  sample rate: %d Hz\n",
1722 		    snd_rme96_playback_getrate(rme96));
1723 	if (rme96->wcreg & RME96_WCR_MODE24) {
1724 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1725 	} else {
1726 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1727 	}
1728 	if (rme96->areg & RME96_AR_WSEL) {
1729 		snd_iprintf(buffer, "  sample clock source: word clock\n");
1730 	} else if (rme96->wcreg & RME96_WCR_MASTER) {
1731 		snd_iprintf(buffer, "  sample clock source: internal\n");
1732 	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1733 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)\n");
1734 	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1735 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)\n");
1736 	} else {
1737 		snd_iprintf(buffer, "  sample clock source: autosync\n");
1738 	}
1739 	if (rme96->wcreg & RME96_WCR_PRO) {
1740 		snd_iprintf(buffer, "  format: AES/EBU (professional)\n");
1741 	} else {
1742 		snd_iprintf(buffer, "  format: IEC958 (consumer)\n");
1743 	}
1744 	if (rme96->wcreg & RME96_WCR_EMP) {
1745 		snd_iprintf(buffer, "  emphasis: on\n");
1746 	} else {
1747 		snd_iprintf(buffer, "  emphasis: off\n");
1748 	}
1749 	if (rme96->wcreg & RME96_WCR_DOLBY) {
1750 		snd_iprintf(buffer, "  non-audio (dolby): on\n");
1751 	} else {
1752 		snd_iprintf(buffer, "  non-audio (dolby): off\n");
1753 	}
1754 	if (RME96_HAS_ANALOG_IN(rme96)) {
1755 		snd_iprintf(buffer, "\nAnalog output settings\n");
1756 		switch (snd_rme96_getmontracks(rme96)) {
1757 		case RME96_MONITOR_TRACKS_1_2:
1758 			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2\n");
1759 			break;
1760 		case RME96_MONITOR_TRACKS_3_4:
1761 			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4\n");
1762 			break;
1763 		case RME96_MONITOR_TRACKS_5_6:
1764 			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6\n");
1765 			break;
1766 		case RME96_MONITOR_TRACKS_7_8:
1767 			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8\n");
1768 			break;
1769 		}
1770 		switch (snd_rme96_getattenuation(rme96)) {
1771 		case RME96_ATTENUATION_0:
1772 			snd_iprintf(buffer, "  attenuation: 0 dB\n");
1773 			break;
1774 		case RME96_ATTENUATION_6:
1775 			snd_iprintf(buffer, "  attenuation: -6 dB\n");
1776 			break;
1777 		case RME96_ATTENUATION_12:
1778 			snd_iprintf(buffer, "  attenuation: -12 dB\n");
1779 			break;
1780 		case RME96_ATTENUATION_18:
1781 			snd_iprintf(buffer, "  attenuation: -18 dB\n");
1782 			break;
1783 		}
1784 		snd_iprintf(buffer, "  volume left: %u\n", rme96->vol[0]);
1785 		snd_iprintf(buffer, "  volume right: %u\n", rme96->vol[1]);
1786 	}
1787 }
1788 
1789 static void snd_rme96_proc_init(struct rme96 *rme96)
1790 {
1791 	snd_card_ro_proc_new(rme96->card, "rme96", rme96, snd_rme96_proc_read);
1792 }
1793 
1794 /*
1795  * control interface
1796  */
1797 
1798 #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info
1799 
1800 static int
1801 snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1802 {
1803 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1804 
1805 	guard(spinlock_irq)(&rme96->lock);
1806 	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
1807 	return 0;
1808 }
1809 static int
1810 snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1811 {
1812 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1813 	unsigned int val;
1814 	int change;
1815 
1816 	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
1817 	guard(spinlock_irq)(&rme96->lock);
1818 	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
1819 	change = val != rme96->wcreg;
1820 	rme96->wcreg = val;
1821 	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1822 	return change;
1823 }
1824 
1825 static int
1826 snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1827 {
1828 	static const char * const _texts[5] = {
1829 		"Optical", "Coaxial", "Internal", "XLR", "Analog"
1830 	};
1831 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1832 	const char *texts[5] = {
1833 		_texts[0], _texts[1], _texts[2], _texts[3], _texts[4]
1834 	};
1835 	int num_items;
1836 
1837 	switch (rme96->pci->device) {
1838 	case PCI_DEVICE_ID_RME_DIGI96:
1839 	case PCI_DEVICE_ID_RME_DIGI96_8:
1840 		num_items = 3;
1841 		break;
1842 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1843 		num_items = 4;
1844 		break;
1845 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1846 		if (rme96->rev > 4) {
1847 			/* PST */
1848 			num_items = 4;
1849 			texts[3] = _texts[4]; /* Analog instead of XLR */
1850 		} else {
1851 			/* PAD */
1852 			num_items = 5;
1853 		}
1854 		break;
1855 	default:
1856 		snd_BUG();
1857 		return -EINVAL;
1858 	}
1859 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
1860 }
1861 static int
1862 snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1863 {
1864 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1865 	unsigned int items = 3;
1866 
1867 	guard(spinlock_irq)(&rme96->lock);
1868 	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
1869 
1870 	switch (rme96->pci->device) {
1871 	case PCI_DEVICE_ID_RME_DIGI96:
1872 	case PCI_DEVICE_ID_RME_DIGI96_8:
1873 		items = 3;
1874 		break;
1875 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1876 		items = 4;
1877 		break;
1878 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1879 		if (rme96->rev > 4) {
1880 			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
1881 			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
1882 				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
1883 			}
1884 			items = 4;
1885 		} else {
1886 			items = 5;
1887 		}
1888 		break;
1889 	default:
1890 		snd_BUG();
1891 		break;
1892 	}
1893 	if (ucontrol->value.enumerated.item[0] >= items) {
1894 		ucontrol->value.enumerated.item[0] = items - 1;
1895 	}
1896 
1897 	return 0;
1898 }
1899 static int
1900 snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1901 {
1902 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1903 	unsigned int val;
1904 	int change, items = 3;
1905 
1906 	switch (rme96->pci->device) {
1907 	case PCI_DEVICE_ID_RME_DIGI96:
1908 	case PCI_DEVICE_ID_RME_DIGI96_8:
1909 		items = 3;
1910 		break;
1911 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1912 		items = 4;
1913 		break;
1914 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1915 		if (rme96->rev > 4) {
1916 			items = 4;
1917 		} else {
1918 			items = 5;
1919 		}
1920 		break;
1921 	default:
1922 		snd_BUG();
1923 		break;
1924 	}
1925 	val = ucontrol->value.enumerated.item[0] % items;
1926 
1927 	/* special case for PST */
1928 	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {
1929 		if (val == RME96_INPUT_XLR) {
1930 			val = RME96_INPUT_ANALOG;
1931 		}
1932 	}
1933 
1934 	guard(spinlock_irq)(&rme96->lock);
1935 	change = (int)val != snd_rme96_getinputtype(rme96);
1936 	snd_rme96_setinputtype(rme96, val);
1937 	return change;
1938 }
1939 
1940 static int
1941 snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1942 {
1943 	static const char * const texts[3] = { "AutoSync", "Internal", "Word" };
1944 
1945 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
1946 }
1947 static int
1948 snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1949 {
1950 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1951 
1952 	guard(spinlock_irq)(&rme96->lock);
1953 	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
1954 	return 0;
1955 }
1956 static int
1957 snd_rme96_put_clockmode_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;
1962 
1963 	val = ucontrol->value.enumerated.item[0] % 3;
1964 	guard(spinlock_irq)(&rme96->lock);
1965 	change = (int)val != snd_rme96_getclockmode(rme96);
1966 	snd_rme96_setclockmode(rme96, val);
1967 	return change;
1968 }
1969 
1970 static int
1971 snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1972 {
1973 	static const char * const texts[4] = {
1974 		"0 dB", "-6 dB", "-12 dB", "-18 dB"
1975 	};
1976 
1977 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
1978 }
1979 static int
1980 snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1981 {
1982 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1983 
1984 	guard(spinlock_irq)(&rme96->lock);
1985 	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
1986 	return 0;
1987 }
1988 static int
1989 snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1990 {
1991 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1992 	unsigned int val;
1993 	int change;
1994 
1995 	val = ucontrol->value.enumerated.item[0] % 4;
1996 	guard(spinlock_irq)(&rme96->lock);
1997 
1998 	change = (int)val != snd_rme96_getattenuation(rme96);
1999 	snd_rme96_setattenuation(rme96, val);
2000 	return change;
2001 }
2002 
2003 static int
2004 snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2005 {
2006 	static const char * const texts[4] = { "1+2", "3+4", "5+6", "7+8" };
2007 
2008 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2009 }
2010 static int
2011 snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2012 {
2013 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2014 
2015 	guard(spinlock_irq)(&rme96->lock);
2016 	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
2017 	return 0;
2018 }
2019 static int
2020 snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2021 {
2022 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2023 	unsigned int val;
2024 	int change;
2025 
2026 	val = ucontrol->value.enumerated.item[0] % 4;
2027 	guard(spinlock_irq)(&rme96->lock);
2028 	change = (int)val != snd_rme96_getmontracks(rme96);
2029 	snd_rme96_setmontracks(rme96, val);
2030 	return change;
2031 }
2032 
2033 static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)
2034 {
2035 	u32 val = 0;
2036 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
2037 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
2038 	if (val & RME96_WCR_PRO)
2039 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2040 	else
2041 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2042 	return val;
2043 }
2044 
2045 static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
2046 {
2047 	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
2048 			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
2049 	if (val & RME96_WCR_PRO)
2050 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
2051 	else
2052 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
2053 }
2054 
2055 static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2056 {
2057 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2058 	uinfo->count = 1;
2059 	return 0;
2060 }
2061 
2062 static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2063 {
2064 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2065 
2066 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
2067 	return 0;
2068 }
2069 
2070 static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2071 {
2072 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2073 	int change;
2074 	u32 val;
2075 
2076 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2077 	guard(spinlock_irq)(&rme96->lock);
2078 	change = val != rme96->wcreg_spdif;
2079 	rme96->wcreg_spdif = val;
2080 	return change;
2081 }
2082 
2083 static int snd_rme96_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2084 {
2085 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2086 	uinfo->count = 1;
2087 	return 0;
2088 }
2089 
2090 static int snd_rme96_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2091 {
2092 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2093 
2094 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif_stream);
2095 	return 0;
2096 }
2097 
2098 static int snd_rme96_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2099 {
2100 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2101 	int change;
2102 	u32 val;
2103 
2104 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2105 	guard(spinlock_irq)(&rme96->lock);
2106 	change = val != rme96->wcreg_spdif_stream;
2107 	rme96->wcreg_spdif_stream = val;
2108 	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
2109 	rme96->wcreg |= val;
2110 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
2111 	return change;
2112 }
2113 
2114 static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2115 {
2116 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2117 	uinfo->count = 1;
2118 	return 0;
2119 }
2120 
2121 static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2122 {
2123 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
2124 	return 0;
2125 }
2126 
2127 static int
2128 snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2129 {
2130 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2131 
2132         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2133         uinfo->count = 2;
2134         uinfo->value.integer.min = 0;
2135 	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
2136         return 0;
2137 }
2138 
2139 static int
2140 snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2141 {
2142 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2143 
2144 	guard(spinlock_irq)(&rme96->lock);
2145         u->value.integer.value[0] = rme96->vol[0];
2146         u->value.integer.value[1] = rme96->vol[1];
2147 
2148         return 0;
2149 }
2150 
2151 static int
2152 snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2153 {
2154 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2155         int change = 0;
2156 	unsigned int vol, maxvol;
2157 
2158 
2159 	if (!RME96_HAS_ANALOG_OUT(rme96))
2160 		return -EINVAL;
2161 	maxvol = RME96_185X_MAX_OUT(rme96);
2162 	guard(spinlock_irq)(&rme96->lock);
2163 	vol = u->value.integer.value[0];
2164 	if (vol != rme96->vol[0] && vol <= maxvol) {
2165 		rme96->vol[0] = vol;
2166 		change = 1;
2167 	}
2168 	vol = u->value.integer.value[1];
2169 	if (vol != rme96->vol[1] && vol <= maxvol) {
2170 		rme96->vol[1] = vol;
2171 		change = 1;
2172 	}
2173 	if (change)
2174 		snd_rme96_apply_dac_volume(rme96);
2175 
2176         return change;
2177 }
2178 
2179 static const struct snd_kcontrol_new snd_rme96_controls[] = {
2180 {
2181 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2182 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2183 	.info =		snd_rme96_control_spdif_info,
2184 	.get =		snd_rme96_control_spdif_get,
2185 	.put =		snd_rme96_control_spdif_put
2186 },
2187 {
2188 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2189 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2190 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2191 	.info =		snd_rme96_control_spdif_stream_info,
2192 	.get =		snd_rme96_control_spdif_stream_get,
2193 	.put =		snd_rme96_control_spdif_stream_put
2194 },
2195 {
2196 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2197 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2198 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
2199 	.info =		snd_rme96_control_spdif_mask_info,
2200 	.get =		snd_rme96_control_spdif_mask_get,
2201 	.private_value = IEC958_AES0_NONAUDIO |
2202 			IEC958_AES0_PROFESSIONAL |
2203 			IEC958_AES0_CON_EMPHASIS
2204 },
2205 {
2206 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2207 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2208 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
2209 	.info =		snd_rme96_control_spdif_mask_info,
2210 	.get =		snd_rme96_control_spdif_mask_get,
2211 	.private_value = IEC958_AES0_NONAUDIO |
2212 			IEC958_AES0_PROFESSIONAL |
2213 			IEC958_AES0_PRO_EMPHASIS
2214 },
2215 {
2216         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2217 	.name =         "Input Connector",
2218 	.info =         snd_rme96_info_inputtype_control,
2219 	.get =          snd_rme96_get_inputtype_control,
2220 	.put =          snd_rme96_put_inputtype_control
2221 },
2222 {
2223         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2224 	.name =         "Loopback Input",
2225 	.info =         snd_rme96_info_loopback_control,
2226 	.get =          snd_rme96_get_loopback_control,
2227 	.put =          snd_rme96_put_loopback_control
2228 },
2229 {
2230         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2231 	.name =         "Sample Clock Source",
2232 	.info =         snd_rme96_info_clockmode_control,
2233 	.get =          snd_rme96_get_clockmode_control,
2234 	.put =          snd_rme96_put_clockmode_control
2235 },
2236 {
2237         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2238 	.name =         "Monitor Tracks",
2239 	.info =         snd_rme96_info_montracks_control,
2240 	.get =          snd_rme96_get_montracks_control,
2241 	.put =          snd_rme96_put_montracks_control
2242 },
2243 {
2244         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2245 	.name =         "Attenuation",
2246 	.info =         snd_rme96_info_attenuation_control,
2247 	.get =          snd_rme96_get_attenuation_control,
2248 	.put =          snd_rme96_put_attenuation_control
2249 },
2250 {
2251         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2252 	.name =         "DAC Playback Volume",
2253 	.info =         snd_rme96_dac_volume_info,
2254 	.get =          snd_rme96_dac_volume_get,
2255 	.put =          snd_rme96_dac_volume_put
2256 }
2257 };
2258 
2259 static int
2260 snd_rme96_create_switches(struct snd_card *card,
2261 			  struct rme96 *rme96)
2262 {
2263 	int idx, err;
2264 	struct snd_kcontrol *kctl;
2265 
2266 	for (idx = 0; idx < 7; idx++) {
2267 		kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96);
2268 		err = snd_ctl_add(card, kctl);
2269 		if (err < 0)
2270 			return err;
2271 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
2272 			rme96->spdif_ctl = kctl;
2273 	}
2274 
2275 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2276 		for (idx = 7; idx < 10; idx++) {
2277 			err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96));
2278 			if (err < 0)
2279 				return err;
2280 		}
2281 	}
2282 
2283 	return 0;
2284 }
2285 
2286 /*
2287  * Card initialisation
2288  */
2289 
2290 static int rme96_suspend(struct device *dev)
2291 {
2292 	struct snd_card *card = dev_get_drvdata(dev);
2293 	struct rme96 *rme96 = card->private_data;
2294 
2295 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2296 
2297 	/* save capture & playback pointers */
2298 	rme96->playback_pointer = readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
2299 				  & RME96_RCR_AUDIO_ADDR_MASK;
2300 	rme96->capture_pointer = readl(rme96->iobase + RME96_IO_GET_REC_POS)
2301 				 & RME96_RCR_AUDIO_ADDR_MASK;
2302 
2303 	/* save playback and capture buffers */
2304 	memcpy_fromio(rme96->playback_suspend_buffer,
2305 		      rme96->iobase + RME96_IO_PLAY_BUFFER, RME96_BUFFER_SIZE);
2306 	memcpy_fromio(rme96->capture_suspend_buffer,
2307 		      rme96->iobase + RME96_IO_REC_BUFFER, RME96_BUFFER_SIZE);
2308 
2309 	/* disable the DAC  */
2310 	rme96->areg &= ~RME96_AR_DAC_EN;
2311 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2312 	return 0;
2313 }
2314 
2315 static int rme96_resume(struct device *dev)
2316 {
2317 	struct snd_card *card = dev_get_drvdata(dev);
2318 	struct rme96 *rme96 = card->private_data;
2319 
2320 	/* reset playback and record buffer pointers */
2321 	writel(0, rme96->iobase + RME96_IO_SET_PLAY_POS
2322 		  + rme96->playback_pointer);
2323 	writel(0, rme96->iobase + RME96_IO_SET_REC_POS
2324 		  + rme96->capture_pointer);
2325 
2326 	/* restore playback and capture buffers */
2327 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER,
2328 		    rme96->playback_suspend_buffer, RME96_BUFFER_SIZE);
2329 	memcpy_toio(rme96->iobase + RME96_IO_REC_BUFFER,
2330 		    rme96->capture_suspend_buffer, RME96_BUFFER_SIZE);
2331 
2332 	/* reset the ADC */
2333 	writel(rme96->areg | RME96_AR_PD2,
2334 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
2335 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2336 
2337 	/* reset and enable DAC, restore analog volume */
2338 	snd_rme96_reset_dac(rme96);
2339 	rme96->areg |= RME96_AR_DAC_EN;
2340 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2341 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2342 		usleep_range(3000, 10000);
2343 		snd_rme96_apply_dac_volume(rme96);
2344 	}
2345 
2346 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2347 
2348 	return 0;
2349 }
2350 
2351 static DEFINE_SIMPLE_DEV_PM_OPS(rme96_pm, rme96_suspend, rme96_resume);
2352 
2353 static void snd_rme96_card_free(struct snd_card *card)
2354 {
2355 	snd_rme96_free(card->private_data);
2356 }
2357 
2358 static int
2359 __snd_rme96_probe(struct pci_dev *pci,
2360 		  const struct pci_device_id *pci_id)
2361 {
2362 	static int dev;
2363 	struct rme96 *rme96;
2364 	struct snd_card *card;
2365 	int err;
2366 	u8 val;
2367 
2368 	if (dev >= SNDRV_CARDS) {
2369 		return -ENODEV;
2370 	}
2371 	if (!enable[dev]) {
2372 		dev++;
2373 		return -ENOENT;
2374 	}
2375 	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2376 				sizeof(*rme96), &card);
2377 	if (err < 0)
2378 		return err;
2379 	card->private_free = snd_rme96_card_free;
2380 	rme96 = card->private_data;
2381 	rme96->card = card;
2382 	rme96->pci = pci;
2383 	err = snd_rme96_create(rme96);
2384 	if (err)
2385 		return err;
2386 
2387 	if (IS_ENABLED(CONFIG_PM_SLEEP)) {
2388 		rme96->playback_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2389 		if (!rme96->playback_suspend_buffer)
2390 			return -ENOMEM;
2391 		rme96->capture_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2392 		if (!rme96->capture_suspend_buffer)
2393 			return -ENOMEM;
2394 	}
2395 
2396 	strscpy(card->driver, "Digi96");
2397 	switch (rme96->pci->device) {
2398 	case PCI_DEVICE_ID_RME_DIGI96:
2399 		strscpy(card->shortname, "RME Digi96");
2400 		break;
2401 	case PCI_DEVICE_ID_RME_DIGI96_8:
2402 		strscpy(card->shortname, "RME Digi96/8");
2403 		break;
2404 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
2405 		strscpy(card->shortname, "RME Digi96/8 PRO");
2406 		break;
2407 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2408 		pci_read_config_byte(rme96->pci, 8, &val);
2409 		if (val < 5) {
2410 			strscpy(card->shortname, "RME Digi96/8 PAD");
2411 		} else {
2412 			strscpy(card->shortname, "RME Digi96/8 PST");
2413 		}
2414 		break;
2415 	}
2416 	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
2417 		rme96->port, rme96->irq);
2418 	err = snd_card_register(card);
2419 	if (err)
2420 		return err;
2421 
2422 	pci_set_drvdata(pci, card);
2423 	dev++;
2424 	return 0;
2425 }
2426 
2427 static int snd_rme96_probe(struct pci_dev *pci,
2428 			   const struct pci_device_id *pci_id)
2429 {
2430 	return snd_card_free_on_error(&pci->dev, __snd_rme96_probe(pci, pci_id));
2431 }
2432 
2433 static struct pci_driver rme96_driver = {
2434 	.name = KBUILD_MODNAME,
2435 	.id_table = snd_rme96_ids,
2436 	.probe = snd_rme96_probe,
2437 	.driver = {
2438 		.pm = &rme96_pm,
2439 	},
2440 };
2441 
2442 module_pci_driver(rme96_driver);
2443