[ALSA] Optimize for config without PROC_FS (pci drivers)
[linux-2.6.git] / sound / pci / emu10k1 / emu10k1x.c
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 <sound/driver.h>
33 #include <linux/init.h>
34 #include <linux/interrupt.h>
35 #include <linux/pci.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 int 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 enable;
331   
332         spin_lock_irqsave(&emu->emu_lock, flags);
333         enable = inl(emu->port + INTE) | intrenb;
334         outl(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 enable;
342   
343         spin_lock_irqsave(&emu->emu_lock, flags);
344         enable = inl(emu->port + INTE) & ~intrenb;
345         outl(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 i/o port
758         release_and_free_resource(chip->res_port);
759
760         // release the irq
761         if (chip->irq >= 0)
762                 free_irq(chip->irq, (void *)chip);
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                                           struct pt_regs *regs)
784 {
785         unsigned int status;
786
787         struct emu10k1x *chip = dev_id;
788         struct emu10k1x_voice *pvoice = chip->voices;
789         int i;
790         int mask;
791
792         status = inl(chip->port + IPR);
793
794         if (! status)
795                 return IRQ_NONE;
796
797         // capture interrupt
798         if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
799                 struct emu10k1x_voice *pvoice = &chip->capture_voice;
800                 if (pvoice->use)
801                         snd_emu10k1x_pcm_interrupt(chip, pvoice);
802                 else
803                         snd_emu10k1x_intr_disable(chip, 
804                                                   INTE_CAP_0_LOOP |
805                                                   INTE_CAP_0_HALF_LOOP);
806         }
807                 
808         mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
809         for (i = 0; i < 3; i++) {
810                 if (status & mask) {
811                         if (pvoice->use)
812                                 snd_emu10k1x_pcm_interrupt(chip, pvoice);
813                         else 
814                                 snd_emu10k1x_intr_disable(chip, mask);
815                 }
816                 pvoice++;
817                 mask <<= 1;
818         }
819                 
820         if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
821                 if (chip->midi.interrupt)
822                         chip->midi.interrupt(chip, status);
823                 else
824                         snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
825         }
826                 
827         // acknowledge the interrupt if necessary
828         outl(status, chip->port + IPR);
829
830         // snd_printk(KERN_INFO "interrupt %08x\n", status);
831         return IRQ_HANDLED;
832 }
833
834 static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
835 {
836         struct snd_pcm *pcm;
837         int err;
838         int capture = 0;
839   
840         if (rpcm)
841                 *rpcm = NULL;
842         if (device == 0)
843                 capture = 1;
844         
845         if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
846                 return err;
847   
848         pcm->private_data = emu;
849         
850         switch(device) {
851         case 0:
852                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
853                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
854                 break;
855         case 1:
856         case 2:
857                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
858                 break;
859         }
860
861         pcm->info_flags = 0;
862         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
863         switch(device) {
864         case 0:
865                 strcpy(pcm->name, "EMU10K1X Front");
866                 break;
867         case 1:
868                 strcpy(pcm->name, "EMU10K1X Rear");
869                 break;
870         case 2:
871                 strcpy(pcm->name, "EMU10K1X Center/LFE");
872                 break;
873         }
874         emu->pcm = pcm;
875
876         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
877                                               snd_dma_pci_data(emu->pci), 
878                                               32*1024, 32*1024);
879   
880         if (rpcm)
881                 *rpcm = pcm;
882   
883         return 0;
884 }
885
886 static int __devinit snd_emu10k1x_create(struct snd_card *card,
887                                          struct pci_dev *pci,
888                                          struct emu10k1x **rchip)
889 {
890         struct emu10k1x *chip;
891         int err;
892         int ch;
893         static struct snd_device_ops ops = {
894                 .dev_free = snd_emu10k1x_dev_free,
895         };
896   
897         *rchip = NULL;
898   
899         if ((err = pci_enable_device(pci)) < 0)
900                 return err;
901         if (pci_set_dma_mask(pci, 0x0fffffff) < 0 ||
902             pci_set_consistent_dma_mask(pci, 0x0fffffff) < 0) {
903                 snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
904                 pci_disable_device(pci);
905                 return -ENXIO;
906         }
907   
908         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
909         if (chip == NULL) {
910                 pci_disable_device(pci);
911                 return -ENOMEM;
912         }
913   
914         chip->card = card;
915         chip->pci = pci;
916         chip->irq = -1;
917
918         spin_lock_init(&chip->emu_lock);
919         spin_lock_init(&chip->voice_lock);
920   
921         chip->port = pci_resource_start(pci, 0);
922         if ((chip->res_port = request_region(chip->port, 8,
923                                              "EMU10K1X")) == NULL) { 
924                 snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
925                 snd_emu10k1x_free(chip);
926                 return -EBUSY;
927         }
928
929         if (request_irq(pci->irq, snd_emu10k1x_interrupt,
930                         SA_INTERRUPT|SA_SHIRQ, "EMU10K1X",
931                         (void *)chip)) {
932                 snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
933                 snd_emu10k1x_free(chip);
934                 return -EBUSY;
935         }
936         chip->irq = pci->irq;
937   
938         if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
939                                4 * 1024, &chip->dma_buffer) < 0) {
940                 snd_emu10k1x_free(chip);
941                 return -ENOMEM;
942         }
943
944         pci_set_master(pci);
945         /* read revision & serial */
946         pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
947         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
948         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
949         snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
950                    chip->revision, chip->serial);
951
952         outl(0, chip->port + INTE);     
953
954         for(ch = 0; ch < 3; ch++) {
955                 chip->voices[ch].emu = chip;
956                 chip->voices[ch].number = ch;
957         }
958
959         /*
960          *  Init to 0x02109204 :
961          *  Clock accuracy    = 0     (1000ppm)
962          *  Sample Rate       = 2     (48kHz)
963          *  Audio Channel     = 1     (Left of 2)
964          *  Source Number     = 0     (Unspecified)
965          *  Generation Status = 1     (Original for Cat Code 12)
966          *  Cat Code          = 12    (Digital Signal Mixer)
967          *  Mode              = 0     (Mode 0)
968          *  Emphasis          = 0     (None)
969          *  CP                = 1     (Copyright unasserted)
970          *  AN                = 0     (Audio data)
971          *  P                 = 0     (Consumer)
972          */
973         snd_emu10k1x_ptr_write(chip, SPCS0, 0,
974                                chip->spdif_bits[0] = 
975                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
976                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
977                                SPCS_GENERATIONSTATUS | 0x00001200 |
978                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
979         snd_emu10k1x_ptr_write(chip, SPCS1, 0,
980                                chip->spdif_bits[1] = 
981                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
982                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
983                                SPCS_GENERATIONSTATUS | 0x00001200 |
984                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
985         snd_emu10k1x_ptr_write(chip, SPCS2, 0,
986                                chip->spdif_bits[2] = 
987                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
988                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
989                                SPCS_GENERATIONSTATUS | 0x00001200 |
990                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
991
992         snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
993         snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
994         snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
995
996         outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
997
998         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
999                                   chip, &ops)) < 0) {
1000                 snd_emu10k1x_free(chip);
1001                 return err;
1002         }
1003         *rchip = chip;
1004         return 0;
1005 }
1006
1007 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry, 
1008                                        struct snd_info_buffer *buffer)
1009 {
1010         struct emu10k1x *emu = entry->private_data;
1011         unsigned long value,value1,value2;
1012         unsigned long flags;
1013         int i;
1014
1015         snd_iprintf(buffer, "Registers:\n\n");
1016         for(i = 0; i < 0x20; i+=4) {
1017                 spin_lock_irqsave(&emu->emu_lock, flags);
1018                 value = inl(emu->port + i);
1019                 spin_unlock_irqrestore(&emu->emu_lock, flags);
1020                 snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1021         }
1022         snd_iprintf(buffer, "\nRegisters\n\n");
1023         for(i = 0; i <= 0x48; i++) {
1024                 value = snd_emu10k1x_ptr_read(emu, i, 0);
1025                 if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1026                         value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1027                         value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1028                         snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1029                 } else {
1030                         snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1031                 }
1032         }
1033 }
1034
1035 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry, 
1036                                         struct snd_info_buffer *buffer)
1037 {
1038         struct emu10k1x *emu = entry->private_data;
1039         char line[64];
1040         unsigned int reg, channel_id , val;
1041
1042         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1043                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1044                         continue;
1045
1046                 if ((reg < 0x49) && (reg >=0) && (val <= 0xffffffff) 
1047                     && (channel_id >=0) && (channel_id <= 2) )
1048                         snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1049         }
1050 }
1051
1052 static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu)
1053 {
1054         struct snd_info_entry *entry;
1055         
1056         if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1057                 snd_info_set_text_ops(entry, emu, 1024, snd_emu10k1x_proc_reg_read);
1058                 entry->c.text.write_size = 64;
1059                 entry->c.text.write = snd_emu10k1x_proc_reg_write;
1060                 entry->mode |= S_IWUSR;
1061                 entry->private_data = emu;
1062         }
1063         
1064         return 0;
1065 }
1066
1067 static int snd_emu10k1x_shared_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1068 {
1069         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1070         uinfo->count = 1;
1071         uinfo->value.integer.min = 0;
1072         uinfo->value.integer.max = 1;
1073         return 0;
1074 }
1075
1076 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1077                                          struct snd_ctl_elem_value *ucontrol)
1078 {
1079         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1080
1081         ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1082
1083         return 0;
1084 }
1085
1086 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1087                                          struct snd_ctl_elem_value *ucontrol)
1088 {
1089         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1090         unsigned int val;
1091         int change = 0;
1092
1093         val = ucontrol->value.integer.value[0] ;
1094
1095         if (val) {
1096                 // enable spdif output
1097                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1098                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1099                 snd_emu10k1x_gpio_write(emu, 0x1000);
1100         } else {
1101                 // disable spdif output
1102                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1103                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1104                 snd_emu10k1x_gpio_write(emu, 0x1080);
1105         }
1106         return change;
1107 }
1108
1109 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata =
1110 {
1111         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
1112         .name =         "Analog/Digital Output Jack",
1113         .info =         snd_emu10k1x_shared_spdif_info,
1114         .get =          snd_emu10k1x_shared_spdif_get,
1115         .put =          snd_emu10k1x_shared_spdif_put
1116 };
1117
1118 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1119 {
1120         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1121         uinfo->count = 1;
1122         return 0;
1123 }
1124
1125 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1126                                   struct snd_ctl_elem_value *ucontrol)
1127 {
1128         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1129         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1130
1131         ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1132         ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1133         ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1134         ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1135         return 0;
1136 }
1137
1138 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1139                                        struct snd_ctl_elem_value *ucontrol)
1140 {
1141         ucontrol->value.iec958.status[0] = 0xff;
1142         ucontrol->value.iec958.status[1] = 0xff;
1143         ucontrol->value.iec958.status[2] = 0xff;
1144         ucontrol->value.iec958.status[3] = 0xff;
1145         return 0;
1146 }
1147
1148 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1149                                   struct snd_ctl_elem_value *ucontrol)
1150 {
1151         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1152         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1153         int change;
1154         unsigned int val;
1155
1156         val = (ucontrol->value.iec958.status[0] << 0) |
1157                 (ucontrol->value.iec958.status[1] << 8) |
1158                 (ucontrol->value.iec958.status[2] << 16) |
1159                 (ucontrol->value.iec958.status[3] << 24);
1160         change = val != emu->spdif_bits[idx];
1161         if (change) {
1162                 snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1163                 emu->spdif_bits[idx] = val;
1164         }
1165         return change;
1166 }
1167
1168 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1169 {
1170         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1171         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1172         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1173         .count =        3,
1174         .info =         snd_emu10k1x_spdif_info,
1175         .get =          snd_emu10k1x_spdif_get_mask
1176 };
1177
1178 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1179 {
1180         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1181         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1182         .count =        3,
1183         .info =         snd_emu10k1x_spdif_info,
1184         .get =          snd_emu10k1x_spdif_get,
1185         .put =          snd_emu10k1x_spdif_put
1186 };
1187
1188 static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu)
1189 {
1190         int err;
1191         struct snd_kcontrol *kctl;
1192         struct snd_card *card = emu->card;
1193
1194         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1195                 return -ENOMEM;
1196         if ((err = snd_ctl_add(card, kctl)))
1197                 return err;
1198         if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1199                 return -ENOMEM;
1200         if ((err = snd_ctl_add(card, kctl)))
1201                 return err;
1202         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1203                 return -ENOMEM;
1204         if ((err = snd_ctl_add(card, kctl)))
1205                 return err;
1206
1207         return 0;
1208 }
1209
1210 #define EMU10K1X_MIDI_MODE_INPUT        (1<<0)
1211 #define EMU10K1X_MIDI_MODE_OUTPUT       (1<<1)
1212
1213 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1214 {
1215         return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1216 }
1217
1218 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1219 {
1220         snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1221 }
1222
1223 #define mpu401_write_data(emu, mpu, data)       mpu401_write(emu, mpu, data, 0)
1224 #define mpu401_write_cmd(emu, mpu, data)        mpu401_write(emu, mpu, data, 1)
1225 #define mpu401_read_data(emu, mpu)              mpu401_read(emu, mpu, 0)
1226 #define mpu401_read_stat(emu, mpu)              mpu401_read(emu, mpu, 1)
1227
1228 #define mpu401_input_avail(emu,mpu)     (!(mpu401_read_stat(emu,mpu) & 0x80))
1229 #define mpu401_output_ready(emu,mpu)    (!(mpu401_read_stat(emu,mpu) & 0x40))
1230
1231 #define MPU401_RESET            0xff
1232 #define MPU401_ENTER_UART       0x3f
1233 #define MPU401_ACK              0xfe
1234
1235 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1236 {
1237         int timeout = 100000;
1238         for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1239                 mpu401_read_data(emu, mpu);
1240 #ifdef CONFIG_SND_DEBUG
1241         if (timeout <= 0)
1242                 snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
1243 #endif
1244 }
1245
1246 /*
1247
1248  */
1249
1250 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1251                                        struct emu10k1x_midi *midi, unsigned int status)
1252 {
1253         unsigned char byte;
1254
1255         if (midi->rmidi == NULL) {
1256                 snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1257                 return;
1258         }
1259
1260         spin_lock(&midi->input_lock);
1261         if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1262                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1263                         mpu401_clear_rx(emu, midi);
1264                 } else {
1265                         byte = mpu401_read_data(emu, midi);
1266                         if (midi->substream_input)
1267                                 snd_rawmidi_receive(midi->substream_input, &byte, 1);
1268                 }
1269         }
1270         spin_unlock(&midi->input_lock);
1271
1272         spin_lock(&midi->output_lock);
1273         if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1274                 if (midi->substream_output &&
1275                     snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1276                         mpu401_write_data(emu, midi, byte);
1277                 } else {
1278                         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1279                 }
1280         }
1281         spin_unlock(&midi->output_lock);
1282 }
1283
1284 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1285 {
1286         do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1287 }
1288
1289 static void snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1290                                   struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1291 {
1292         unsigned long flags;
1293         int timeout, ok;
1294
1295         spin_lock_irqsave(&midi->input_lock, flags);
1296         mpu401_write_data(emu, midi, 0x00);
1297         /* mpu401_clear_rx(emu, midi); */
1298
1299         mpu401_write_cmd(emu, midi, cmd);
1300         if (ack) {
1301                 ok = 0;
1302                 timeout = 10000;
1303                 while (!ok && timeout-- > 0) {
1304                         if (mpu401_input_avail(emu, midi)) {
1305                                 if (mpu401_read_data(emu, midi) == MPU401_ACK)
1306                                         ok = 1;
1307                         }
1308                 }
1309                 if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1310                         ok = 1;
1311         } else {
1312                 ok = 1;
1313         }
1314         spin_unlock_irqrestore(&midi->input_lock, flags);
1315         if (!ok)
1316                 snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1317                            cmd, emu->port,
1318                            mpu401_read_stat(emu, midi),
1319                            mpu401_read_data(emu, midi));
1320 }
1321
1322 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1323 {
1324         struct emu10k1x *emu;
1325         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1326         unsigned long flags;
1327         
1328         emu = midi->emu;
1329         snd_assert(emu, return -ENXIO);
1330         spin_lock_irqsave(&midi->open_lock, flags);
1331         midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1332         midi->substream_input = substream;
1333         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1334                 spin_unlock_irqrestore(&midi->open_lock, flags);
1335                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1);
1336                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1);
1337         } else {
1338                 spin_unlock_irqrestore(&midi->open_lock, flags);
1339         }
1340         return 0;
1341 }
1342
1343 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1344 {
1345         struct emu10k1x *emu;
1346         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1347         unsigned long flags;
1348
1349         emu = midi->emu;
1350         snd_assert(emu, 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                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1);
1357                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1);
1358         } else {
1359                 spin_unlock_irqrestore(&midi->open_lock, flags);
1360         }
1361         return 0;
1362 }
1363
1364 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1365 {
1366         struct emu10k1x *emu;
1367         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1368         unsigned long flags;
1369
1370         emu = midi->emu;
1371         snd_assert(emu, return -ENXIO);
1372         spin_lock_irqsave(&midi->open_lock, flags);
1373         snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1374         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1375         midi->substream_input = NULL;
1376         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1377                 spin_unlock_irqrestore(&midi->open_lock, flags);
1378                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1379         } else {
1380                 spin_unlock_irqrestore(&midi->open_lock, flags);
1381         }
1382         return 0;
1383 }
1384
1385 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1386 {
1387         struct emu10k1x *emu;
1388         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1389         unsigned long flags;
1390
1391         emu = midi->emu;
1392         snd_assert(emu, return -ENXIO);
1393         spin_lock_irqsave(&midi->open_lock, flags);
1394         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1395         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1396         midi->substream_output = NULL;
1397         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1398                 spin_unlock_irqrestore(&midi->open_lock, flags);
1399                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1400         } else {
1401                 spin_unlock_irqrestore(&midi->open_lock, flags);
1402         }
1403         return 0;
1404 }
1405
1406 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1407 {
1408         struct emu10k1x *emu;
1409         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1410         emu = midi->emu;
1411         snd_assert(emu, return);
1412
1413         if (up)
1414                 snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1415         else
1416                 snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1417 }
1418
1419 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1420 {
1421         struct emu10k1x *emu;
1422         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1423         unsigned long flags;
1424
1425         emu = midi->emu;
1426         snd_assert(emu, return);
1427
1428         if (up) {
1429                 int max = 4;
1430                 unsigned char byte;
1431         
1432                 /* try to send some amount of bytes here before interrupts */
1433                 spin_lock_irqsave(&midi->output_lock, flags);
1434                 while (max > 0) {
1435                         if (mpu401_output_ready(emu, midi)) {
1436                                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1437                                     snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1438                                         /* no more data */
1439                                         spin_unlock_irqrestore(&midi->output_lock, flags);
1440                                         return;
1441                                 }
1442                                 mpu401_write_data(emu, midi, byte);
1443                                 max--;
1444                         } else {
1445                                 break;
1446                         }
1447                 }
1448                 spin_unlock_irqrestore(&midi->output_lock, flags);
1449                 snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1450         } else {
1451                 snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1452         }
1453 }
1454
1455 /*
1456
1457  */
1458
1459 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1460 {
1461         .open =         snd_emu10k1x_midi_output_open,
1462         .close =        snd_emu10k1x_midi_output_close,
1463         .trigger =      snd_emu10k1x_midi_output_trigger,
1464 };
1465
1466 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1467 {
1468         .open =         snd_emu10k1x_midi_input_open,
1469         .close =        snd_emu10k1x_midi_input_close,
1470         .trigger =      snd_emu10k1x_midi_input_trigger,
1471 };
1472
1473 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1474 {
1475         struct emu10k1x_midi *midi = rmidi->private_data;
1476         midi->interrupt = NULL;
1477         midi->rmidi = NULL;
1478 }
1479
1480 static int __devinit emu10k1x_midi_init(struct emu10k1x *emu,
1481                                         struct emu10k1x_midi *midi, int device, char *name)
1482 {
1483         struct snd_rawmidi *rmidi;
1484         int err;
1485
1486         if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1487                 return err;
1488         midi->emu = emu;
1489         spin_lock_init(&midi->open_lock);
1490         spin_lock_init(&midi->input_lock);
1491         spin_lock_init(&midi->output_lock);
1492         strcpy(rmidi->name, name);
1493         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1494         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1495         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1496                              SNDRV_RAWMIDI_INFO_INPUT |
1497                              SNDRV_RAWMIDI_INFO_DUPLEX;
1498         rmidi->private_data = midi;
1499         rmidi->private_free = snd_emu10k1x_midi_free;
1500         midi->rmidi = rmidi;
1501         return 0;
1502 }
1503
1504 static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu)
1505 {
1506         struct emu10k1x_midi *midi = &emu->midi;
1507         int err;
1508
1509         if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1510                 return err;
1511
1512         midi->tx_enable = INTE_MIDITXENABLE;
1513         midi->rx_enable = INTE_MIDIRXENABLE;
1514         midi->port = MUDATA;
1515         midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1516         midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1517         midi->interrupt = snd_emu10k1x_midi_interrupt;
1518         return 0;
1519 }
1520
1521 static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
1522                                         const struct pci_device_id *pci_id)
1523 {
1524         static int dev;
1525         struct snd_card *card;
1526         struct emu10k1x *chip;
1527         int err;
1528
1529         if (dev >= SNDRV_CARDS)
1530                 return -ENODEV;
1531         if (!enable[dev]) {
1532                 dev++;
1533                 return -ENOENT;
1534         }
1535
1536         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1537         if (card == NULL)
1538                 return -ENOMEM;
1539
1540         if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1541                 snd_card_free(card);
1542                 return err;
1543         }
1544
1545         if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1546                 snd_card_free(card);
1547                 return err;
1548         }
1549         if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1550                 snd_card_free(card);
1551                 return err;
1552         }
1553         if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1554                 snd_card_free(card);
1555                 return err;
1556         }
1557
1558         if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1559                 snd_card_free(card);
1560                 return err;
1561         }
1562
1563         if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1564                 snd_card_free(card);
1565                 return err;
1566         }
1567         
1568         if ((err = snd_emu10k1x_midi(chip)) < 0) {
1569                 snd_card_free(card);
1570                 return err;
1571         }
1572
1573         snd_emu10k1x_proc_init(chip);
1574
1575         strcpy(card->driver, "EMU10K1X");
1576         strcpy(card->shortname, "Dell Sound Blaster Live!");
1577         sprintf(card->longname, "%s at 0x%lx irq %i",
1578                 card->shortname, chip->port, chip->irq);
1579
1580         if ((err = snd_card_register(card)) < 0) {
1581                 snd_card_free(card);
1582                 return err;
1583         }
1584
1585         pci_set_drvdata(pci, card);
1586         dev++;
1587         return 0;
1588 }
1589
1590 static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
1591 {
1592         snd_card_free(pci_get_drvdata(pci));
1593         pci_set_drvdata(pci, NULL);
1594 }
1595
1596 // PCI IDs
1597 static struct pci_device_id snd_emu10k1x_ids[] = {
1598         { 0x1102, 0x0006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },    /* Dell OEM version (EMU10K1) */
1599         { 0, }
1600 };
1601 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1602
1603 // pci_driver definition
1604 static struct pci_driver driver = {
1605         .name = "EMU10K1X",
1606         .id_table = snd_emu10k1x_ids,
1607         .probe = snd_emu10k1x_probe,
1608         .remove = __devexit_p(snd_emu10k1x_remove),
1609 };
1610
1611 // initialization of the module
1612 static int __init alsa_card_emu10k1x_init(void)
1613 {
1614         int err;
1615
1616         if ((err = pci_register_driver(&driver)) > 0)
1617                 return err;
1618
1619         return 0;
1620 }
1621
1622 // clean up the module
1623 static void __exit alsa_card_emu10k1x_exit(void)
1624 {
1625         pci_unregister_driver(&driver);
1626 }
1627
1628 module_init(alsa_card_emu10k1x_init)
1629 module_exit(alsa_card_emu10k1x_exit)