xref: /openbmc/linux/sound/pci/emu10k1/emu10k1x.c (revision 9ac8d3fb)
1 /*
2  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
3  *  Driver EMU10K1X chips
4  *
5  *  Parts of this code were adapted from audigyls.c driver which is
6  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
7  *
8  *  BUGS:
9  *    --
10  *
11  *  TODO:
12  *
13  *  Chips (SB0200 model):
14  *    - EMU10K1X-DBQ
15  *    - STAC 9708T
16  *
17  *   This program is free software; you can redistribute it and/or modify
18  *   it under the terms of the GNU General Public License as published by
19  *   the Free Software Foundation; either version 2 of the License, or
20  *   (at your option) any later version.
21  *
22  *   This program is distributed in the hope that it will be useful,
23  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
24  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25  *   GNU General Public License for more details.
26  *
27  *   You should have received a copy of the GNU General Public License
28  *   along with this program; if not, write to the Free Software
29  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
30  *
31  */
32 #include <linux/init.h>
33 #include <linux/interrupt.h>
34 #include <linux/pci.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/slab.h>
37 #include <linux/moduleparam.h>
38 #include <sound/core.h>
39 #include <sound/initval.h>
40 #include <sound/pcm.h>
41 #include <sound/ac97_codec.h>
42 #include <sound/info.h>
43 #include <sound/rawmidi.h>
44 
45 MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
46 MODULE_DESCRIPTION("EMU10K1X");
47 MODULE_LICENSE("GPL");
48 MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
49 
50 // module parameters (see "Module Parameters")
51 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
53 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
54 
55 module_param_array(index, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
57 module_param_array(id, charp, NULL, 0444);
58 MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
59 module_param_array(enable, bool, NULL, 0444);
60 MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard.");
61 
62 
63 // some definitions were borrowed from emu10k1 driver as they seem to be the same
64 /************************************************************************************************/
65 /* PCI function 0 registers, address = <val> + PCIBASE0						*/
66 /************************************************************************************************/
67 
68 #define PTR			0x00		/* Indexed register set pointer register	*/
69 						/* NOTE: The CHANNELNUM and ADDRESS words can	*/
70 						/* be modified independently of each other.	*/
71 
72 #define DATA			0x04		/* Indexed register set data register		*/
73 
74 #define IPR			0x08		/* Global interrupt pending register		*/
75 						/* Clear pending interrupts by writing a 1 to	*/
76 						/* the relevant bits and zero to the other bits	*/
77 #define IPR_MIDITRANSBUFEMPTY   0x00000001	/* MIDI UART transmit buffer empty		*/
78 #define IPR_MIDIRECVBUFEMPTY    0x00000002	/* MIDI UART receive buffer empty		*/
79 #define IPR_CH_0_LOOP           0x00000800      /* Channel 0 loop                               */
80 #define IPR_CH_0_HALF_LOOP      0x00000100      /* Channel 0 half loop                          */
81 #define IPR_CAP_0_LOOP          0x00080000      /* Channel capture loop                         */
82 #define IPR_CAP_0_HALF_LOOP     0x00010000      /* Channel capture half loop                    */
83 
84 #define INTE			0x0c		/* Interrupt enable register			*/
85 #define INTE_MIDITXENABLE       0x00000001	/* Enable MIDI transmit-buffer-empty interrupts	*/
86 #define INTE_MIDIRXENABLE       0x00000002	/* Enable MIDI receive-buffer-empty interrupts	*/
87 #define INTE_CH_0_LOOP          0x00000800      /* Channel 0 loop                               */
88 #define INTE_CH_0_HALF_LOOP     0x00000100      /* Channel 0 half loop                          */
89 #define INTE_CAP_0_LOOP         0x00080000      /* Channel capture loop                         */
90 #define INTE_CAP_0_HALF_LOOP    0x00010000      /* Channel capture half loop                    */
91 
92 #define HCFG			0x14		/* Hardware config register			*/
93 
94 #define HCFG_LOCKSOUNDCACHE	0x00000008	/* 1 = Cancel bustmaster accesses to soundcache */
95 						/* NOTE: This should generally never be used.  	*/
96 #define HCFG_AUDIOENABLE	0x00000001	/* 0 = CODECs transmit zero-valued samples	*/
97 						/* Should be set to 1 when the EMU10K1 is	*/
98 						/* completely initialized.			*/
99 #define GPIO			0x18		/* Defaults: 00001080-Analog, 00001000-SPDIF.   */
100 
101 
102 #define AC97DATA		0x1c		/* AC97 register set data register (16 bit)	*/
103 
104 #define AC97ADDRESS		0x1e		/* AC97 register set address register (8 bit)	*/
105 
106 /********************************************************************************************************/
107 /* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers			*/
108 /********************************************************************************************************/
109 #define PLAYBACK_LIST_ADDR	0x00		/* Base DMA address of a list of pointers to each period/size */
110 						/* One list entry: 4 bytes for DMA address,
111 						 * 4 bytes for period_size << 16.
112 						 * One list entry is 8 bytes long.
113 						 * One list entry for each period in the buffer.
114 						 */
115 #define PLAYBACK_LIST_SIZE	0x01		/* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000  */
116 #define PLAYBACK_LIST_PTR	0x02		/* Pointer to the current period being played */
117 #define PLAYBACK_DMA_ADDR	0x04		/* Playback DMA addresss */
118 #define PLAYBACK_PERIOD_SIZE	0x05		/* Playback period size */
119 #define PLAYBACK_POINTER	0x06		/* Playback period pointer. Sample currently in DAC */
120 #define PLAYBACK_UNKNOWN1       0x07
121 #define PLAYBACK_UNKNOWN2       0x08
122 
123 /* Only one capture channel supported */
124 #define CAPTURE_DMA_ADDR	0x10		/* Capture DMA address */
125 #define CAPTURE_BUFFER_SIZE	0x11		/* Capture buffer size */
126 #define CAPTURE_POINTER		0x12		/* Capture buffer pointer. Sample currently in ADC */
127 #define CAPTURE_UNKNOWN         0x13
128 
129 /* From 0x20 - 0x3f, last samples played on each channel */
130 
131 #define TRIGGER_CHANNEL         0x40            /* Trigger channel playback                     */
132 #define TRIGGER_CHANNEL_0       0x00000001      /* Trigger channel 0                            */
133 #define TRIGGER_CHANNEL_1       0x00000002      /* Trigger channel 1                            */
134 #define TRIGGER_CHANNEL_2       0x00000004      /* Trigger channel 2                            */
135 #define TRIGGER_CAPTURE         0x00000100      /* Trigger capture channel                      */
136 
137 #define ROUTING                 0x41            /* Setup sound routing ?                        */
138 #define ROUTING_FRONT_LEFT      0x00000001
139 #define ROUTING_FRONT_RIGHT     0x00000002
140 #define ROUTING_REAR_LEFT       0x00000004
141 #define ROUTING_REAR_RIGHT      0x00000008
142 #define ROUTING_CENTER_LFE      0x00010000
143 
144 #define SPCS0			0x42		/* SPDIF output Channel Status 0 register	*/
145 
146 #define SPCS1			0x43		/* SPDIF output Channel Status 1 register	*/
147 
148 #define SPCS2			0x44		/* SPDIF output Channel Status 2 register	*/
149 
150 #define SPCS_CLKACCYMASK	0x30000000	/* Clock accuracy				*/
151 #define SPCS_CLKACCY_1000PPM	0x00000000	/* 1000 parts per million			*/
152 #define SPCS_CLKACCY_50PPM	0x10000000	/* 50 parts per million				*/
153 #define SPCS_CLKACCY_VARIABLE	0x20000000	/* Variable accuracy				*/
154 #define SPCS_SAMPLERATEMASK	0x0f000000	/* Sample rate					*/
155 #define SPCS_SAMPLERATE_44	0x00000000	/* 44.1kHz sample rate				*/
156 #define SPCS_SAMPLERATE_48	0x02000000	/* 48kHz sample rate				*/
157 #define SPCS_SAMPLERATE_32	0x03000000	/* 32kHz sample rate				*/
158 #define SPCS_CHANNELNUMMASK	0x00f00000	/* Channel number				*/
159 #define SPCS_CHANNELNUM_UNSPEC	0x00000000	/* Unspecified channel number			*/
160 #define SPCS_CHANNELNUM_LEFT	0x00100000	/* Left channel					*/
161 #define SPCS_CHANNELNUM_RIGHT	0x00200000	/* Right channel				*/
162 #define SPCS_SOURCENUMMASK	0x000f0000	/* Source number				*/
163 #define SPCS_SOURCENUM_UNSPEC	0x00000000	/* Unspecified source number			*/
164 #define SPCS_GENERATIONSTATUS	0x00008000	/* Originality flag (see IEC-958 spec)		*/
165 #define SPCS_CATEGORYCODEMASK	0x00007f00	/* Category code (see IEC-958 spec)		*/
166 #define SPCS_MODEMASK		0x000000c0	/* Mode (see IEC-958 spec)			*/
167 #define SPCS_EMPHASISMASK	0x00000038	/* Emphasis					*/
168 #define SPCS_EMPHASIS_NONE	0x00000000	/* No emphasis					*/
169 #define SPCS_EMPHASIS_50_15	0x00000008	/* 50/15 usec 2 channel				*/
170 #define SPCS_COPYRIGHT		0x00000004	/* Copyright asserted flag -- do not modify	*/
171 #define SPCS_NOTAUDIODATA	0x00000002	/* 0 = Digital audio, 1 = not audio		*/
172 #define SPCS_PROFESSIONAL	0x00000001	/* 0 = Consumer (IEC-958), 1 = pro (AES3-1992)	*/
173 
174 #define SPDIF_SELECT		0x45		/* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */
175 
176 /* This is the MPU port on the card                      					*/
177 #define MUDATA		0x47
178 #define MUCMD		0x48
179 #define MUSTAT		MUCMD
180 
181 /* From 0x50 - 0x5f, last samples captured */
182 
183 /**
184  * The hardware has 3 channels for playback and 1 for capture.
185  *  - channel 0 is the front channel
186  *  - channel 1 is the rear channel
187  *  - channel 2 is the center/lfe chanel
188  * Volume is controlled by the AC97 for the front and rear channels by
189  * the PCM Playback Volume, Sigmatel Surround Playback Volume and
190  * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
191  * the front/rear channel mixing in the REAR OUT jack. When using the
192  * 4-Speaker Stereo, both front and rear channels will be mixed in the
193  * REAR OUT.
194  * The center/lfe channel has no volume control and cannot be muted during
195  * playback.
196  */
197 
198 struct emu10k1x_voice {
199 	struct emu10k1x *emu;
200 	int number;
201 	int use;
202 
203 	struct emu10k1x_pcm *epcm;
204 };
205 
206 struct emu10k1x_pcm {
207 	struct emu10k1x *emu;
208 	struct snd_pcm_substream *substream;
209 	struct emu10k1x_voice *voice;
210 	unsigned short running;
211 };
212 
213 struct emu10k1x_midi {
214 	struct emu10k1x *emu;
215 	struct snd_rawmidi *rmidi;
216 	struct snd_rawmidi_substream *substream_input;
217 	struct snd_rawmidi_substream *substream_output;
218 	unsigned int midi_mode;
219 	spinlock_t input_lock;
220 	spinlock_t output_lock;
221 	spinlock_t open_lock;
222 	int tx_enable, rx_enable;
223 	int port;
224 	int ipr_tx, ipr_rx;
225 	void (*interrupt)(struct emu10k1x *emu, unsigned int status);
226 };
227 
228 // definition of the chip-specific record
229 struct emu10k1x {
230 	struct snd_card *card;
231 	struct pci_dev *pci;
232 
233 	unsigned long port;
234 	struct resource *res_port;
235 	int irq;
236 
237 	unsigned char revision;		/* chip revision */
238 	unsigned int serial;            /* serial number */
239 	unsigned short model;		/* subsystem id */
240 
241 	spinlock_t emu_lock;
242 	spinlock_t voice_lock;
243 
244 	struct snd_ac97 *ac97;
245 	struct snd_pcm *pcm;
246 
247 	struct emu10k1x_voice voices[3];
248 	struct emu10k1x_voice capture_voice;
249 	u32 spdif_bits[3]; // SPDIF out setup
250 
251 	struct snd_dma_buffer dma_buffer;
252 
253 	struct emu10k1x_midi midi;
254 };
255 
256 /* hardware definition */
257 static struct snd_pcm_hardware snd_emu10k1x_playback_hw = {
258 	.info =			(SNDRV_PCM_INFO_MMAP |
259 				 SNDRV_PCM_INFO_INTERLEAVED |
260 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
261 				 SNDRV_PCM_INFO_MMAP_VALID),
262 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
263 	.rates =		SNDRV_PCM_RATE_48000,
264 	.rate_min =		48000,
265 	.rate_max =		48000,
266 	.channels_min =		2,
267 	.channels_max =		2,
268 	.buffer_bytes_max =	(32*1024),
269 	.period_bytes_min =	64,
270 	.period_bytes_max =	(16*1024),
271 	.periods_min =		2,
272 	.periods_max =		8,
273 	.fifo_size =		0,
274 };
275 
276 static struct snd_pcm_hardware snd_emu10k1x_capture_hw = {
277 	.info =			(SNDRV_PCM_INFO_MMAP |
278 				 SNDRV_PCM_INFO_INTERLEAVED |
279 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
280 				 SNDRV_PCM_INFO_MMAP_VALID),
281 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
282 	.rates =		SNDRV_PCM_RATE_48000,
283 	.rate_min =		48000,
284 	.rate_max =		48000,
285 	.channels_min =		2,
286 	.channels_max =		2,
287 	.buffer_bytes_max =	(32*1024),
288 	.period_bytes_min =	64,
289 	.period_bytes_max =	(16*1024),
290 	.periods_min =		2,
291 	.periods_max =		2,
292 	.fifo_size =		0,
293 };
294 
295 static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu,
296 					  unsigned int reg,
297 					  unsigned int chn)
298 {
299 	unsigned long flags;
300 	unsigned int regptr, val;
301 
302 	regptr = (reg << 16) | chn;
303 
304 	spin_lock_irqsave(&emu->emu_lock, flags);
305 	outl(regptr, emu->port + PTR);
306 	val = inl(emu->port + DATA);
307 	spin_unlock_irqrestore(&emu->emu_lock, flags);
308 	return val;
309 }
310 
311 static void snd_emu10k1x_ptr_write(struct emu10k1x *emu,
312 				   unsigned int reg,
313 				   unsigned int chn,
314 				   unsigned int data)
315 {
316 	unsigned int regptr;
317 	unsigned long flags;
318 
319 	regptr = (reg << 16) | chn;
320 
321 	spin_lock_irqsave(&emu->emu_lock, flags);
322 	outl(regptr, emu->port + PTR);
323 	outl(data, emu->port + DATA);
324 	spin_unlock_irqrestore(&emu->emu_lock, flags);
325 }
326 
327 static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
328 {
329 	unsigned long flags;
330 	unsigned int intr_enable;
331 
332 	spin_lock_irqsave(&emu->emu_lock, flags);
333 	intr_enable = inl(emu->port + INTE) | intrenb;
334 	outl(intr_enable, emu->port + INTE);
335 	spin_unlock_irqrestore(&emu->emu_lock, flags);
336 }
337 
338 static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
339 {
340 	unsigned long flags;
341 	unsigned int intr_enable;
342 
343 	spin_lock_irqsave(&emu->emu_lock, flags);
344 	intr_enable = inl(emu->port + INTE) & ~intrenb;
345 	outl(intr_enable, emu->port + INTE);
346 	spin_unlock_irqrestore(&emu->emu_lock, flags);
347 }
348 
349 static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value)
350 {
351 	unsigned long flags;
352 
353 	spin_lock_irqsave(&emu->emu_lock, flags);
354 	outl(value, emu->port + GPIO);
355 	spin_unlock_irqrestore(&emu->emu_lock, flags);
356 }
357 
358 static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
359 {
360 	kfree(runtime->private_data);
361 }
362 
363 static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice)
364 {
365 	struct emu10k1x_pcm *epcm;
366 
367 	if ((epcm = voice->epcm) == NULL)
368 		return;
369 	if (epcm->substream == NULL)
370 		return;
371 #if 0
372 	snd_printk(KERN_INFO "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
373 		   epcm->substream->ops->pointer(epcm->substream),
374 		   snd_pcm_lib_period_bytes(epcm->substream),
375 		   snd_pcm_lib_buffer_bytes(epcm->substream));
376 #endif
377 	snd_pcm_period_elapsed(epcm->substream);
378 }
379 
380 /* open callback */
381 static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
382 {
383 	struct emu10k1x *chip = snd_pcm_substream_chip(substream);
384 	struct emu10k1x_pcm *epcm;
385 	struct snd_pcm_runtime *runtime = substream->runtime;
386 	int err;
387 
388 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
389 		return err;
390 	}
391 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
392                 return err;
393 
394 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
395 	if (epcm == NULL)
396 		return -ENOMEM;
397 	epcm->emu = chip;
398 	epcm->substream = substream;
399 
400 	runtime->private_data = epcm;
401 	runtime->private_free = snd_emu10k1x_pcm_free_substream;
402 
403 	runtime->hw = snd_emu10k1x_playback_hw;
404 
405 	return 0;
406 }
407 
408 /* close callback */
409 static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
410 {
411 	return 0;
412 }
413 
414 /* hw_params callback */
415 static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
416 				      struct snd_pcm_hw_params *hw_params)
417 {
418 	struct snd_pcm_runtime *runtime = substream->runtime;
419 	struct emu10k1x_pcm *epcm = runtime->private_data;
420 
421 	if (! epcm->voice) {
422 		epcm->voice = &epcm->emu->voices[substream->pcm->device];
423 		epcm->voice->use = 1;
424 		epcm->voice->epcm = epcm;
425 	}
426 
427 	return snd_pcm_lib_malloc_pages(substream,
428 					params_buffer_bytes(hw_params));
429 }
430 
431 /* hw_free callback */
432 static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
433 {
434 	struct snd_pcm_runtime *runtime = substream->runtime;
435 	struct emu10k1x_pcm *epcm;
436 
437 	if (runtime->private_data == NULL)
438 		return 0;
439 
440 	epcm = runtime->private_data;
441 
442 	if (epcm->voice) {
443 		epcm->voice->use = 0;
444 		epcm->voice->epcm = NULL;
445 		epcm->voice = NULL;
446 	}
447 
448 	return snd_pcm_lib_free_pages(substream);
449 }
450 
451 /* prepare callback */
452 static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
453 {
454 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
455 	struct snd_pcm_runtime *runtime = substream->runtime;
456 	struct emu10k1x_pcm *epcm = runtime->private_data;
457 	int voice = epcm->voice->number;
458 	u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
459 	u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
460 	int i;
461 
462 	for(i = 0; i < runtime->periods; i++) {
463 		*table_base++=runtime->dma_addr+(i*period_size_bytes);
464 		*table_base++=period_size_bytes<<16;
465 	}
466 
467 	snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
468 	snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
469 	snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
470 	snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
471 	snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
472 	snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
473 	snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
474 
475 	snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
476 
477 	return 0;
478 }
479 
480 /* trigger callback */
481 static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
482 				    int cmd)
483 {
484 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
485 	struct snd_pcm_runtime *runtime = substream->runtime;
486 	struct emu10k1x_pcm *epcm = runtime->private_data;
487 	int channel = epcm->voice->number;
488 	int result = 0;
489 
490 //	snd_printk(KERN_INFO "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n", (int)emu, cmd, (int)substream->ops->pointer(substream));
491 
492 	switch (cmd) {
493 	case SNDRV_PCM_TRIGGER_START:
494 		if(runtime->periods == 2)
495 			snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
496 		else
497 			snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
498 		epcm->running = 1;
499 		snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
500 		break;
501 	case SNDRV_PCM_TRIGGER_STOP:
502 		epcm->running = 0;
503 		snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
504 		snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
505 		break;
506 	default:
507 		result = -EINVAL;
508 		break;
509 	}
510 	return result;
511 }
512 
513 /* pointer callback */
514 static snd_pcm_uframes_t
515 snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
516 {
517 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
518 	struct snd_pcm_runtime *runtime = substream->runtime;
519 	struct emu10k1x_pcm *epcm = runtime->private_data;
520 	int channel = epcm->voice->number;
521 	snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
522 
523 	if (!epcm->running)
524 		return 0;
525 
526 	ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
527 	ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
528 	ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
529 
530 	if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
531 		return 0;
532 
533 	if (ptr3 != ptr4)
534 		ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
535 	ptr2 = bytes_to_frames(runtime, ptr1);
536 	ptr2 += (ptr4 >> 3) * runtime->period_size;
537 	ptr = ptr2;
538 
539 	if (ptr >= runtime->buffer_size)
540 		ptr -= runtime->buffer_size;
541 
542 	return ptr;
543 }
544 
545 /* operators */
546 static struct snd_pcm_ops snd_emu10k1x_playback_ops = {
547 	.open =        snd_emu10k1x_playback_open,
548 	.close =       snd_emu10k1x_playback_close,
549 	.ioctl =       snd_pcm_lib_ioctl,
550 	.hw_params =   snd_emu10k1x_pcm_hw_params,
551 	.hw_free =     snd_emu10k1x_pcm_hw_free,
552 	.prepare =     snd_emu10k1x_pcm_prepare,
553 	.trigger =     snd_emu10k1x_pcm_trigger,
554 	.pointer =     snd_emu10k1x_pcm_pointer,
555 };
556 
557 /* open_capture callback */
558 static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
559 {
560 	struct emu10k1x *chip = snd_pcm_substream_chip(substream);
561 	struct emu10k1x_pcm *epcm;
562 	struct snd_pcm_runtime *runtime = substream->runtime;
563 	int err;
564 
565 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
566                 return err;
567 	if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
568                 return err;
569 
570 	epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
571 	if (epcm == NULL)
572 		return -ENOMEM;
573 
574 	epcm->emu = chip;
575 	epcm->substream = substream;
576 
577 	runtime->private_data = epcm;
578 	runtime->private_free = snd_emu10k1x_pcm_free_substream;
579 
580 	runtime->hw = snd_emu10k1x_capture_hw;
581 
582 	return 0;
583 }
584 
585 /* close callback */
586 static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
587 {
588 	return 0;
589 }
590 
591 /* hw_params callback */
592 static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
593 					      struct snd_pcm_hw_params *hw_params)
594 {
595 	struct snd_pcm_runtime *runtime = substream->runtime;
596 	struct emu10k1x_pcm *epcm = runtime->private_data;
597 
598 	if (! epcm->voice) {
599 		if (epcm->emu->capture_voice.use)
600 			return -EBUSY;
601 		epcm->voice = &epcm->emu->capture_voice;
602 		epcm->voice->epcm = epcm;
603 		epcm->voice->use = 1;
604 	}
605 
606 	return snd_pcm_lib_malloc_pages(substream,
607 					params_buffer_bytes(hw_params));
608 }
609 
610 /* hw_free callback */
611 static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
612 {
613 	struct snd_pcm_runtime *runtime = substream->runtime;
614 
615 	struct emu10k1x_pcm *epcm;
616 
617 	if (runtime->private_data == NULL)
618 		return 0;
619 	epcm = runtime->private_data;
620 
621 	if (epcm->voice) {
622 		epcm->voice->use = 0;
623 		epcm->voice->epcm = NULL;
624 		epcm->voice = NULL;
625 	}
626 
627 	return snd_pcm_lib_free_pages(substream);
628 }
629 
630 /* prepare capture callback */
631 static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
632 {
633 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
634 	struct snd_pcm_runtime *runtime = substream->runtime;
635 
636 	snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
637 	snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
638 	snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
639 	snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
640 
641 	return 0;
642 }
643 
644 /* trigger_capture callback */
645 static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
646 					    int cmd)
647 {
648 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
649 	struct snd_pcm_runtime *runtime = substream->runtime;
650 	struct emu10k1x_pcm *epcm = runtime->private_data;
651 	int result = 0;
652 
653 	switch (cmd) {
654 	case SNDRV_PCM_TRIGGER_START:
655 		snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP |
656 					 INTE_CAP_0_HALF_LOOP);
657 		snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
658 		epcm->running = 1;
659 		break;
660 	case SNDRV_PCM_TRIGGER_STOP:
661 		epcm->running = 0;
662 		snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP |
663 					  INTE_CAP_0_HALF_LOOP);
664 		snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
665 		break;
666 	default:
667 		result = -EINVAL;
668 		break;
669 	}
670 	return result;
671 }
672 
673 /* pointer_capture callback */
674 static snd_pcm_uframes_t
675 snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
676 {
677 	struct emu10k1x *emu = snd_pcm_substream_chip(substream);
678 	struct snd_pcm_runtime *runtime = substream->runtime;
679 	struct emu10k1x_pcm *epcm = runtime->private_data;
680 	snd_pcm_uframes_t ptr;
681 
682 	if (!epcm->running)
683 		return 0;
684 
685 	ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
686 	if (ptr >= runtime->buffer_size)
687 		ptr -= runtime->buffer_size;
688 
689 	return ptr;
690 }
691 
692 static struct snd_pcm_ops snd_emu10k1x_capture_ops = {
693 	.open =        snd_emu10k1x_pcm_open_capture,
694 	.close =       snd_emu10k1x_pcm_close_capture,
695 	.ioctl =       snd_pcm_lib_ioctl,
696 	.hw_params =   snd_emu10k1x_pcm_hw_params_capture,
697 	.hw_free =     snd_emu10k1x_pcm_hw_free_capture,
698 	.prepare =     snd_emu10k1x_pcm_prepare_capture,
699 	.trigger =     snd_emu10k1x_pcm_trigger_capture,
700 	.pointer =     snd_emu10k1x_pcm_pointer_capture,
701 };
702 
703 static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
704 					     unsigned short reg)
705 {
706 	struct emu10k1x *emu = ac97->private_data;
707 	unsigned long flags;
708 	unsigned short val;
709 
710 	spin_lock_irqsave(&emu->emu_lock, flags);
711 	outb(reg, emu->port + AC97ADDRESS);
712 	val = inw(emu->port + AC97DATA);
713 	spin_unlock_irqrestore(&emu->emu_lock, flags);
714 	return val;
715 }
716 
717 static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
718 				    unsigned short reg, unsigned short val)
719 {
720 	struct emu10k1x *emu = ac97->private_data;
721 	unsigned long flags;
722 
723 	spin_lock_irqsave(&emu->emu_lock, flags);
724 	outb(reg, emu->port + AC97ADDRESS);
725 	outw(val, emu->port + AC97DATA);
726 	spin_unlock_irqrestore(&emu->emu_lock, flags);
727 }
728 
729 static int snd_emu10k1x_ac97(struct emu10k1x *chip)
730 {
731 	struct snd_ac97_bus *pbus;
732 	struct snd_ac97_template ac97;
733 	int err;
734 	static struct snd_ac97_bus_ops ops = {
735 		.write = snd_emu10k1x_ac97_write,
736 		.read = snd_emu10k1x_ac97_read,
737 	};
738 
739 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
740 		return err;
741 	pbus->no_vra = 1; /* we don't need VRA */
742 
743 	memset(&ac97, 0, sizeof(ac97));
744 	ac97.private_data = chip;
745 	ac97.scaps = AC97_SCAP_NO_SPDIF;
746 	return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
747 }
748 
749 static int snd_emu10k1x_free(struct emu10k1x *chip)
750 {
751 	snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
752 	// disable interrupts
753 	outl(0, chip->port + INTE);
754 	// disable audio
755 	outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
756 
757 	/* release the irq */
758 	if (chip->irq >= 0)
759 		free_irq(chip->irq, chip);
760 
761 	// release the i/o port
762 	release_and_free_resource(chip->res_port);
763 
764 	// release the DMA
765 	if (chip->dma_buffer.area) {
766 		snd_dma_free_pages(&chip->dma_buffer);
767 	}
768 
769 	pci_disable_device(chip->pci);
770 
771 	// release the data
772 	kfree(chip);
773 	return 0;
774 }
775 
776 static int snd_emu10k1x_dev_free(struct snd_device *device)
777 {
778 	struct emu10k1x *chip = device->device_data;
779 	return snd_emu10k1x_free(chip);
780 }
781 
782 static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
783 {
784 	unsigned int status;
785 
786 	struct emu10k1x *chip = dev_id;
787 	struct emu10k1x_voice *pvoice = chip->voices;
788 	int i;
789 	int mask;
790 
791 	status = inl(chip->port + IPR);
792 
793 	if (! status)
794 		return IRQ_NONE;
795 
796 	// capture interrupt
797 	if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
798 		struct emu10k1x_voice *cap_voice = &chip->capture_voice;
799 		if (cap_voice->use)
800 			snd_emu10k1x_pcm_interrupt(chip, cap_voice);
801 		else
802 			snd_emu10k1x_intr_disable(chip,
803 						  INTE_CAP_0_LOOP |
804 						  INTE_CAP_0_HALF_LOOP);
805 	}
806 
807 	mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
808 	for (i = 0; i < 3; i++) {
809 		if (status & mask) {
810 			if (pvoice->use)
811 				snd_emu10k1x_pcm_interrupt(chip, pvoice);
812 			else
813 				snd_emu10k1x_intr_disable(chip, mask);
814 		}
815 		pvoice++;
816 		mask <<= 1;
817 	}
818 
819 	if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
820 		if (chip->midi.interrupt)
821 			chip->midi.interrupt(chip, status);
822 		else
823 			snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
824 	}
825 
826 	// acknowledge the interrupt if necessary
827 	outl(status, chip->port + IPR);
828 
829 	// snd_printk(KERN_INFO "interrupt %08x\n", status);
830 	return IRQ_HANDLED;
831 }
832 
833 static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
834 {
835 	struct snd_pcm *pcm;
836 	int err;
837 	int capture = 0;
838 
839 	if (rpcm)
840 		*rpcm = NULL;
841 	if (device == 0)
842 		capture = 1;
843 
844 	if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
845 		return err;
846 
847 	pcm->private_data = emu;
848 
849 	switch(device) {
850 	case 0:
851 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
852 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
853 		break;
854 	case 1:
855 	case 2:
856 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
857 		break;
858 	}
859 
860 	pcm->info_flags = 0;
861 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
862 	switch(device) {
863 	case 0:
864 		strcpy(pcm->name, "EMU10K1X Front");
865 		break;
866 	case 1:
867 		strcpy(pcm->name, "EMU10K1X Rear");
868 		break;
869 	case 2:
870 		strcpy(pcm->name, "EMU10K1X Center/LFE");
871 		break;
872 	}
873 	emu->pcm = pcm;
874 
875 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
876 					      snd_dma_pci_data(emu->pci),
877 					      32*1024, 32*1024);
878 
879 	if (rpcm)
880 		*rpcm = pcm;
881 
882 	return 0;
883 }
884 
885 static int __devinit snd_emu10k1x_create(struct snd_card *card,
886 					 struct pci_dev *pci,
887 					 struct emu10k1x **rchip)
888 {
889 	struct emu10k1x *chip;
890 	int err;
891 	int ch;
892 	static struct snd_device_ops ops = {
893 		.dev_free = snd_emu10k1x_dev_free,
894 	};
895 
896 	*rchip = NULL;
897 
898 	if ((err = pci_enable_device(pci)) < 0)
899 		return err;
900 	if (pci_set_dma_mask(pci, DMA_28BIT_MASK) < 0 ||
901 	    pci_set_consistent_dma_mask(pci, DMA_28BIT_MASK) < 0) {
902 		snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
903 		pci_disable_device(pci);
904 		return -ENXIO;
905 	}
906 
907 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
908 	if (chip == NULL) {
909 		pci_disable_device(pci);
910 		return -ENOMEM;
911 	}
912 
913 	chip->card = card;
914 	chip->pci = pci;
915 	chip->irq = -1;
916 
917 	spin_lock_init(&chip->emu_lock);
918 	spin_lock_init(&chip->voice_lock);
919 
920 	chip->port = pci_resource_start(pci, 0);
921 	if ((chip->res_port = request_region(chip->port, 8,
922 					     "EMU10K1X")) == NULL) {
923 		snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
924 		snd_emu10k1x_free(chip);
925 		return -EBUSY;
926 	}
927 
928 	if (request_irq(pci->irq, snd_emu10k1x_interrupt,
929 			IRQF_SHARED, "EMU10K1X", chip)) {
930 		snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
931 		snd_emu10k1x_free(chip);
932 		return -EBUSY;
933 	}
934 	chip->irq = pci->irq;
935 
936 	if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
937 			       4 * 1024, &chip->dma_buffer) < 0) {
938 		snd_emu10k1x_free(chip);
939 		return -ENOMEM;
940 	}
941 
942 	pci_set_master(pci);
943 	/* read revision & serial */
944 	chip->revision = pci->revision;
945 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
946 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
947 	snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
948 		   chip->revision, chip->serial);
949 
950 	outl(0, chip->port + INTE);
951 
952 	for(ch = 0; ch < 3; ch++) {
953 		chip->voices[ch].emu = chip;
954 		chip->voices[ch].number = ch;
955 	}
956 
957 	/*
958 	 *  Init to 0x02109204 :
959 	 *  Clock accuracy    = 0     (1000ppm)
960 	 *  Sample Rate       = 2     (48kHz)
961 	 *  Audio Channel     = 1     (Left of 2)
962 	 *  Source Number     = 0     (Unspecified)
963 	 *  Generation Status = 1     (Original for Cat Code 12)
964 	 *  Cat Code          = 12    (Digital Signal Mixer)
965 	 *  Mode              = 0     (Mode 0)
966 	 *  Emphasis          = 0     (None)
967 	 *  CP                = 1     (Copyright unasserted)
968 	 *  AN                = 0     (Audio data)
969 	 *  P                 = 0     (Consumer)
970 	 */
971 	snd_emu10k1x_ptr_write(chip, SPCS0, 0,
972 			       chip->spdif_bits[0] =
973 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
974 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
975 			       SPCS_GENERATIONSTATUS | 0x00001200 |
976 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
977 	snd_emu10k1x_ptr_write(chip, SPCS1, 0,
978 			       chip->spdif_bits[1] =
979 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
980 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
981 			       SPCS_GENERATIONSTATUS | 0x00001200 |
982 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
983 	snd_emu10k1x_ptr_write(chip, SPCS2, 0,
984 			       chip->spdif_bits[2] =
985 			       SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
986 			       SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
987 			       SPCS_GENERATIONSTATUS | 0x00001200 |
988 			       0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
989 
990 	snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
991 	snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
992 	snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
993 
994 	outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
995 
996 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
997 				  chip, &ops)) < 0) {
998 		snd_emu10k1x_free(chip);
999 		return err;
1000 	}
1001 	*rchip = chip;
1002 	return 0;
1003 }
1004 
1005 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry,
1006 				       struct snd_info_buffer *buffer)
1007 {
1008 	struct emu10k1x *emu = entry->private_data;
1009 	unsigned long value,value1,value2;
1010 	unsigned long flags;
1011 	int i;
1012 
1013 	snd_iprintf(buffer, "Registers:\n\n");
1014 	for(i = 0; i < 0x20; i+=4) {
1015 		spin_lock_irqsave(&emu->emu_lock, flags);
1016 		value = inl(emu->port + i);
1017 		spin_unlock_irqrestore(&emu->emu_lock, flags);
1018 		snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1019 	}
1020 	snd_iprintf(buffer, "\nRegisters\n\n");
1021 	for(i = 0; i <= 0x48; i++) {
1022 		value = snd_emu10k1x_ptr_read(emu, i, 0);
1023 		if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1024 			value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1025 			value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1026 			snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1027 		} else {
1028 			snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1029 		}
1030 	}
1031 }
1032 
1033 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
1034 					struct snd_info_buffer *buffer)
1035 {
1036 	struct emu10k1x *emu = entry->private_data;
1037 	char line[64];
1038 	unsigned int reg, channel_id , val;
1039 
1040 	while (!snd_info_get_line(buffer, line, sizeof(line))) {
1041 		if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1042 			continue;
1043 
1044 		if ((reg < 0x49) && (reg >= 0) && (val <= 0xffffffff)
1045 		    && (channel_id >= 0) && (channel_id <= 2) )
1046 			snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1047 	}
1048 }
1049 
1050 static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu)
1051 {
1052 	struct snd_info_entry *entry;
1053 
1054 	if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1055 		snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
1056 		entry->c.text.write = snd_emu10k1x_proc_reg_write;
1057 		entry->mode |= S_IWUSR;
1058 		entry->private_data = emu;
1059 	}
1060 
1061 	return 0;
1062 }
1063 
1064 #define snd_emu10k1x_shared_spdif_info	snd_ctl_boolean_mono_info
1065 
1066 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1067 					 struct snd_ctl_elem_value *ucontrol)
1068 {
1069 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1070 
1071 	ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1072 
1073 	return 0;
1074 }
1075 
1076 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1077 					 struct snd_ctl_elem_value *ucontrol)
1078 {
1079 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1080 	unsigned int val;
1081 	int change = 0;
1082 
1083 	val = ucontrol->value.integer.value[0] ;
1084 
1085 	if (val) {
1086 		// enable spdif output
1087 		snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1088 		snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1089 		snd_emu10k1x_gpio_write(emu, 0x1000);
1090 	} else {
1091 		// disable spdif output
1092 		snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1093 		snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1094 		snd_emu10k1x_gpio_write(emu, 0x1080);
1095 	}
1096 	return change;
1097 }
1098 
1099 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata =
1100 {
1101 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
1102 	.name =		"Analog/Digital Output Jack",
1103 	.info =		snd_emu10k1x_shared_spdif_info,
1104 	.get =		snd_emu10k1x_shared_spdif_get,
1105 	.put =		snd_emu10k1x_shared_spdif_put
1106 };
1107 
1108 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1109 {
1110 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1111 	uinfo->count = 1;
1112 	return 0;
1113 }
1114 
1115 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1116 				  struct snd_ctl_elem_value *ucontrol)
1117 {
1118 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1119 	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1120 
1121 	ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1122 	ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1123 	ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1124 	ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1125 	return 0;
1126 }
1127 
1128 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1129 				       struct snd_ctl_elem_value *ucontrol)
1130 {
1131 	ucontrol->value.iec958.status[0] = 0xff;
1132 	ucontrol->value.iec958.status[1] = 0xff;
1133 	ucontrol->value.iec958.status[2] = 0xff;
1134 	ucontrol->value.iec958.status[3] = 0xff;
1135 	return 0;
1136 }
1137 
1138 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1139 				  struct snd_ctl_elem_value *ucontrol)
1140 {
1141 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1142 	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1143 	int change;
1144 	unsigned int val;
1145 
1146 	val = (ucontrol->value.iec958.status[0] << 0) |
1147 		(ucontrol->value.iec958.status[1] << 8) |
1148 		(ucontrol->value.iec958.status[2] << 16) |
1149 		(ucontrol->value.iec958.status[3] << 24);
1150 	change = val != emu->spdif_bits[idx];
1151 	if (change) {
1152 		snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1153 		emu->spdif_bits[idx] = val;
1154 	}
1155 	return change;
1156 }
1157 
1158 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1159 {
1160 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1161 	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1162 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1163 	.count =	3,
1164 	.info =         snd_emu10k1x_spdif_info,
1165 	.get =          snd_emu10k1x_spdif_get_mask
1166 };
1167 
1168 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1169 {
1170 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1171 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1172 	.count =	3,
1173 	.info =         snd_emu10k1x_spdif_info,
1174 	.get =          snd_emu10k1x_spdif_get,
1175 	.put =          snd_emu10k1x_spdif_put
1176 };
1177 
1178 static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu)
1179 {
1180 	int err;
1181 	struct snd_kcontrol *kctl;
1182 	struct snd_card *card = emu->card;
1183 
1184 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1185 		return -ENOMEM;
1186 	if ((err = snd_ctl_add(card, kctl)))
1187 		return err;
1188 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1189 		return -ENOMEM;
1190 	if ((err = snd_ctl_add(card, kctl)))
1191 		return err;
1192 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1193 		return -ENOMEM;
1194 	if ((err = snd_ctl_add(card, kctl)))
1195 		return err;
1196 
1197 	return 0;
1198 }
1199 
1200 #define EMU10K1X_MIDI_MODE_INPUT	(1<<0)
1201 #define EMU10K1X_MIDI_MODE_OUTPUT	(1<<1)
1202 
1203 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1204 {
1205 	return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1206 }
1207 
1208 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1209 {
1210 	snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1211 }
1212 
1213 #define mpu401_write_data(emu, mpu, data)	mpu401_write(emu, mpu, data, 0)
1214 #define mpu401_write_cmd(emu, mpu, data)	mpu401_write(emu, mpu, data, 1)
1215 #define mpu401_read_data(emu, mpu)		mpu401_read(emu, mpu, 0)
1216 #define mpu401_read_stat(emu, mpu)		mpu401_read(emu, mpu, 1)
1217 
1218 #define mpu401_input_avail(emu,mpu)	(!(mpu401_read_stat(emu,mpu) & 0x80))
1219 #define mpu401_output_ready(emu,mpu)	(!(mpu401_read_stat(emu,mpu) & 0x40))
1220 
1221 #define MPU401_RESET		0xff
1222 #define MPU401_ENTER_UART	0x3f
1223 #define MPU401_ACK		0xfe
1224 
1225 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1226 {
1227 	int timeout = 100000;
1228 	for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1229 		mpu401_read_data(emu, mpu);
1230 #ifdef CONFIG_SND_DEBUG
1231 	if (timeout <= 0)
1232 		snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
1233 #endif
1234 }
1235 
1236 /*
1237 
1238  */
1239 
1240 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1241 				       struct emu10k1x_midi *midi, unsigned int status)
1242 {
1243 	unsigned char byte;
1244 
1245 	if (midi->rmidi == NULL) {
1246 		snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1247 		return;
1248 	}
1249 
1250 	spin_lock(&midi->input_lock);
1251 	if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1252 		if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1253 			mpu401_clear_rx(emu, midi);
1254 		} else {
1255 			byte = mpu401_read_data(emu, midi);
1256 			if (midi->substream_input)
1257 				snd_rawmidi_receive(midi->substream_input, &byte, 1);
1258 		}
1259 	}
1260 	spin_unlock(&midi->input_lock);
1261 
1262 	spin_lock(&midi->output_lock);
1263 	if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1264 		if (midi->substream_output &&
1265 		    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1266 			mpu401_write_data(emu, midi, byte);
1267 		} else {
1268 			snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1269 		}
1270 	}
1271 	spin_unlock(&midi->output_lock);
1272 }
1273 
1274 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1275 {
1276 	do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1277 }
1278 
1279 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1280 				  struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1281 {
1282 	unsigned long flags;
1283 	int timeout, ok;
1284 
1285 	spin_lock_irqsave(&midi->input_lock, flags);
1286 	mpu401_write_data(emu, midi, 0x00);
1287 	/* mpu401_clear_rx(emu, midi); */
1288 
1289 	mpu401_write_cmd(emu, midi, cmd);
1290 	if (ack) {
1291 		ok = 0;
1292 		timeout = 10000;
1293 		while (!ok && timeout-- > 0) {
1294 			if (mpu401_input_avail(emu, midi)) {
1295 				if (mpu401_read_data(emu, midi) == MPU401_ACK)
1296 					ok = 1;
1297 			}
1298 		}
1299 		if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1300 			ok = 1;
1301 	} else {
1302 		ok = 1;
1303 	}
1304 	spin_unlock_irqrestore(&midi->input_lock, flags);
1305 	if (!ok) {
1306 		snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1307 			   cmd, emu->port,
1308 			   mpu401_read_stat(emu, midi),
1309 			   mpu401_read_data(emu, midi));
1310 		return 1;
1311 	}
1312 	return 0;
1313 }
1314 
1315 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1316 {
1317 	struct emu10k1x *emu;
1318 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1319 	unsigned long flags;
1320 
1321 	emu = midi->emu;
1322 	if (snd_BUG_ON(!emu))
1323 		return -ENXIO;
1324 	spin_lock_irqsave(&midi->open_lock, flags);
1325 	midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1326 	midi->substream_input = substream;
1327 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1328 		spin_unlock_irqrestore(&midi->open_lock, flags);
1329 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1330 			goto error_out;
1331 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1332 			goto error_out;
1333 	} else {
1334 		spin_unlock_irqrestore(&midi->open_lock, flags);
1335 	}
1336 	return 0;
1337 
1338 error_out:
1339 	return -EIO;
1340 }
1341 
1342 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1343 {
1344 	struct emu10k1x *emu;
1345 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1346 	unsigned long flags;
1347 
1348 	emu = midi->emu;
1349 	if (snd_BUG_ON(!emu))
1350 		return -ENXIO;
1351 	spin_lock_irqsave(&midi->open_lock, flags);
1352 	midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1353 	midi->substream_output = substream;
1354 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1355 		spin_unlock_irqrestore(&midi->open_lock, flags);
1356 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1357 			goto error_out;
1358 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1359 			goto error_out;
1360 	} else {
1361 		spin_unlock_irqrestore(&midi->open_lock, flags);
1362 	}
1363 	return 0;
1364 
1365 error_out:
1366 	return -EIO;
1367 }
1368 
1369 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1370 {
1371 	struct emu10k1x *emu;
1372 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1373 	unsigned long flags;
1374 	int err = 0;
1375 
1376 	emu = midi->emu;
1377 	if (snd_BUG_ON(!emu))
1378 		return -ENXIO;
1379 	spin_lock_irqsave(&midi->open_lock, flags);
1380 	snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1381 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1382 	midi->substream_input = NULL;
1383 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1384 		spin_unlock_irqrestore(&midi->open_lock, flags);
1385 		err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1386 	} else {
1387 		spin_unlock_irqrestore(&midi->open_lock, flags);
1388 	}
1389 	return err;
1390 }
1391 
1392 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1393 {
1394 	struct emu10k1x *emu;
1395 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1396 	unsigned long flags;
1397 	int err = 0;
1398 
1399 	emu = midi->emu;
1400 	if (snd_BUG_ON(!emu))
1401 		return -ENXIO;
1402 	spin_lock_irqsave(&midi->open_lock, flags);
1403 	snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1404 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1405 	midi->substream_output = NULL;
1406 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1407 		spin_unlock_irqrestore(&midi->open_lock, flags);
1408 		err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1409 	} else {
1410 		spin_unlock_irqrestore(&midi->open_lock, flags);
1411 	}
1412 	return err;
1413 }
1414 
1415 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1416 {
1417 	struct emu10k1x *emu;
1418 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1419 	emu = midi->emu;
1420 	if (snd_BUG_ON(!emu))
1421 		return;
1422 
1423 	if (up)
1424 		snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1425 	else
1426 		snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1427 }
1428 
1429 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1430 {
1431 	struct emu10k1x *emu;
1432 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1433 	unsigned long flags;
1434 
1435 	emu = midi->emu;
1436 	if (snd_BUG_ON(!emu))
1437 		return;
1438 
1439 	if (up) {
1440 		int max = 4;
1441 		unsigned char byte;
1442 
1443 		/* try to send some amount of bytes here before interrupts */
1444 		spin_lock_irqsave(&midi->output_lock, flags);
1445 		while (max > 0) {
1446 			if (mpu401_output_ready(emu, midi)) {
1447 				if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1448 				    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1449 					/* no more data */
1450 					spin_unlock_irqrestore(&midi->output_lock, flags);
1451 					return;
1452 				}
1453 				mpu401_write_data(emu, midi, byte);
1454 				max--;
1455 			} else {
1456 				break;
1457 			}
1458 		}
1459 		spin_unlock_irqrestore(&midi->output_lock, flags);
1460 		snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1461 	} else {
1462 		snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1463 	}
1464 }
1465 
1466 /*
1467 
1468  */
1469 
1470 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1471 {
1472 	.open =		snd_emu10k1x_midi_output_open,
1473 	.close =	snd_emu10k1x_midi_output_close,
1474 	.trigger =	snd_emu10k1x_midi_output_trigger,
1475 };
1476 
1477 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1478 {
1479 	.open =		snd_emu10k1x_midi_input_open,
1480 	.close =	snd_emu10k1x_midi_input_close,
1481 	.trigger =	snd_emu10k1x_midi_input_trigger,
1482 };
1483 
1484 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1485 {
1486 	struct emu10k1x_midi *midi = rmidi->private_data;
1487 	midi->interrupt = NULL;
1488 	midi->rmidi = NULL;
1489 }
1490 
1491 static int __devinit emu10k1x_midi_init(struct emu10k1x *emu,
1492 					struct emu10k1x_midi *midi, int device, char *name)
1493 {
1494 	struct snd_rawmidi *rmidi;
1495 	int err;
1496 
1497 	if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1498 		return err;
1499 	midi->emu = emu;
1500 	spin_lock_init(&midi->open_lock);
1501 	spin_lock_init(&midi->input_lock);
1502 	spin_lock_init(&midi->output_lock);
1503 	strcpy(rmidi->name, name);
1504 	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1505 	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1506 	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1507 	                     SNDRV_RAWMIDI_INFO_INPUT |
1508 	                     SNDRV_RAWMIDI_INFO_DUPLEX;
1509 	rmidi->private_data = midi;
1510 	rmidi->private_free = snd_emu10k1x_midi_free;
1511 	midi->rmidi = rmidi;
1512 	return 0;
1513 }
1514 
1515 static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu)
1516 {
1517 	struct emu10k1x_midi *midi = &emu->midi;
1518 	int err;
1519 
1520 	if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1521 		return err;
1522 
1523 	midi->tx_enable = INTE_MIDITXENABLE;
1524 	midi->rx_enable = INTE_MIDIRXENABLE;
1525 	midi->port = MUDATA;
1526 	midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1527 	midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1528 	midi->interrupt = snd_emu10k1x_midi_interrupt;
1529 	return 0;
1530 }
1531 
1532 static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
1533 					const struct pci_device_id *pci_id)
1534 {
1535 	static int dev;
1536 	struct snd_card *card;
1537 	struct emu10k1x *chip;
1538 	int err;
1539 
1540 	if (dev >= SNDRV_CARDS)
1541 		return -ENODEV;
1542 	if (!enable[dev]) {
1543 		dev++;
1544 		return -ENOENT;
1545 	}
1546 
1547 	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1548 	if (card == NULL)
1549 		return -ENOMEM;
1550 
1551 	if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1552 		snd_card_free(card);
1553 		return err;
1554 	}
1555 
1556 	if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1557 		snd_card_free(card);
1558 		return err;
1559 	}
1560 	if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1561 		snd_card_free(card);
1562 		return err;
1563 	}
1564 	if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1565 		snd_card_free(card);
1566 		return err;
1567 	}
1568 
1569 	if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1570 		snd_card_free(card);
1571 		return err;
1572 	}
1573 
1574 	if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1575 		snd_card_free(card);
1576 		return err;
1577 	}
1578 
1579 	if ((err = snd_emu10k1x_midi(chip)) < 0) {
1580 		snd_card_free(card);
1581 		return err;
1582 	}
1583 
1584 	snd_emu10k1x_proc_init(chip);
1585 
1586 	strcpy(card->driver, "EMU10K1X");
1587 	strcpy(card->shortname, "Dell Sound Blaster Live!");
1588 	sprintf(card->longname, "%s at 0x%lx irq %i",
1589 		card->shortname, chip->port, chip->irq);
1590 
1591 	snd_card_set_dev(card, &pci->dev);
1592 
1593 	if ((err = snd_card_register(card)) < 0) {
1594 		snd_card_free(card);
1595 		return err;
1596 	}
1597 
1598 	pci_set_drvdata(pci, card);
1599 	dev++;
1600 	return 0;
1601 }
1602 
1603 static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
1604 {
1605 	snd_card_free(pci_get_drvdata(pci));
1606 	pci_set_drvdata(pci, NULL);
1607 }
1608 
1609 // PCI IDs
1610 static struct pci_device_id snd_emu10k1x_ids[] = {
1611 	{ 0x1102, 0x0006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },	/* Dell OEM version (EMU10K1) */
1612 	{ 0, }
1613 };
1614 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1615 
1616 // pci_driver definition
1617 static struct pci_driver driver = {
1618 	.name = "EMU10K1X",
1619 	.id_table = snd_emu10k1x_ids,
1620 	.probe = snd_emu10k1x_probe,
1621 	.remove = __devexit_p(snd_emu10k1x_remove),
1622 };
1623 
1624 // initialization of the module
1625 static int __init alsa_card_emu10k1x_init(void)
1626 {
1627 	return pci_register_driver(&driver);
1628 }
1629 
1630 // clean up the module
1631 static void __exit alsa_card_emu10k1x_exit(void)
1632 {
1633 	pci_unregister_driver(&driver);
1634 }
1635 
1636 module_init(alsa_card_emu10k1x_init)
1637 module_exit(alsa_card_emu10k1x_exit)
1638