Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
emu10k1x.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) by Francisco Moraes <[email protected]>
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 <[email protected]>
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/module.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 <[email protected]>");
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 bool 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 address */
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 
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 const struct snd_pcm_chmap_elem surround_map[] = {
834  { .channels = 2,
835  .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
836  { }
837 };
838 
839 static const struct snd_pcm_chmap_elem clfe_map[] = {
840  { .channels = 2,
841  .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
842  { }
843 };
844 
845 static int __devinit snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
846 {
847  struct snd_pcm *pcm;
848  const struct snd_pcm_chmap_elem *map = NULL;
849  int err;
850  int capture = 0;
851 
852  if (rpcm)
853  *rpcm = NULL;
854  if (device == 0)
855  capture = 1;
856 
857  if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
858  return err;
859 
860  pcm->private_data = emu;
861 
862  switch(device) {
863  case 0:
864  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
865  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
866  break;
867  case 1:
868  case 2:
869  snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
870  break;
871  }
872 
873  pcm->info_flags = 0;
874  switch(device) {
875  case 0:
876  strcpy(pcm->name, "EMU10K1X Front");
877  map = snd_pcm_std_chmaps;
878  break;
879  case 1:
880  strcpy(pcm->name, "EMU10K1X Rear");
881  map = surround_map;
882  break;
883  case 2:
884  strcpy(pcm->name, "EMU10K1X Center/LFE");
885  map = clfe_map;
886  break;
887  }
888  emu->pcm = pcm;
889 
890  snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
891  snd_dma_pci_data(emu->pci),
892  32*1024, 32*1024);
893 
894  err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
895  1 << 2, NULL);
896  if (err < 0)
897  return err;
898 
899  if (rpcm)
900  *rpcm = pcm;
901 
902  return 0;
903 }
904 
905 static int __devinit snd_emu10k1x_create(struct snd_card *card,
906  struct pci_dev *pci,
907  struct emu10k1x **rchip)
908 {
909  struct emu10k1x *chip;
910  int err;
911  int ch;
912  static struct snd_device_ops ops = {
913  .dev_free = snd_emu10k1x_dev_free,
914  };
915 
916  *rchip = NULL;
917 
918  if ((err = pci_enable_device(pci)) < 0)
919  return err;
920  if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
921  pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
922  snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
923  pci_disable_device(pci);
924  return -ENXIO;
925  }
926 
927  chip = kzalloc(sizeof(*chip), GFP_KERNEL);
928  if (chip == NULL) {
929  pci_disable_device(pci);
930  return -ENOMEM;
931  }
932 
933  chip->card = card;
934  chip->pci = pci;
935  chip->irq = -1;
936 
937  spin_lock_init(&chip->emu_lock);
938  spin_lock_init(&chip->voice_lock);
939 
940  chip->port = pci_resource_start(pci, 0);
941  if ((chip->res_port = request_region(chip->port, 8,
942  "EMU10K1X")) == NULL) {
943  snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
944  snd_emu10k1x_free(chip);
945  return -EBUSY;
946  }
947 
948  if (request_irq(pci->irq, snd_emu10k1x_interrupt,
949  IRQF_SHARED, KBUILD_MODNAME, chip)) {
950  snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
951  snd_emu10k1x_free(chip);
952  return -EBUSY;
953  }
954  chip->irq = pci->irq;
955 
956  if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
957  4 * 1024, &chip->dma_buffer) < 0) {
958  snd_emu10k1x_free(chip);
959  return -ENOMEM;
960  }
961 
962  pci_set_master(pci);
963  /* read revision & serial */
964  chip->revision = pci->revision;
965  pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
966  pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
967  snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
968  chip->revision, chip->serial);
969 
970  outl(0, chip->port + INTE);
971 
972  for(ch = 0; ch < 3; ch++) {
973  chip->voices[ch].emu = chip;
974  chip->voices[ch].number = ch;
975  }
976 
977  /*
978  * Init to 0x02109204 :
979  * Clock accuracy = 0 (1000ppm)
980  * Sample Rate = 2 (48kHz)
981  * Audio Channel = 1 (Left of 2)
982  * Source Number = 0 (Unspecified)
983  * Generation Status = 1 (Original for Cat Code 12)
984  * Cat Code = 12 (Digital Signal Mixer)
985  * Mode = 0 (Mode 0)
986  * Emphasis = 0 (None)
987  * CP = 1 (Copyright unasserted)
988  * AN = 0 (Audio data)
989  * P = 0 (Consumer)
990  */
991  snd_emu10k1x_ptr_write(chip, SPCS0, 0,
992  chip->spdif_bits[0] =
993  SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
994  SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
995  SPCS_GENERATIONSTATUS | 0x00001200 |
996  0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
997  snd_emu10k1x_ptr_write(chip, SPCS1, 0,
998  chip->spdif_bits[1] =
999  SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1000  SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1001  SPCS_GENERATIONSTATUS | 0x00001200 |
1002  0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1003  snd_emu10k1x_ptr_write(chip, SPCS2, 0,
1004  chip->spdif_bits[2] =
1005  SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1006  SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1007  SPCS_GENERATIONSTATUS | 0x00001200 |
1008  0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1009 
1010  snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
1011  snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
1012  snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
1013 
1014  outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
1015 
1016  if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1017  chip, &ops)) < 0) {
1018  snd_emu10k1x_free(chip);
1019  return err;
1020  }
1021  *rchip = chip;
1022  return 0;
1023 }
1024 
1025 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry,
1026  struct snd_info_buffer *buffer)
1027 {
1028  struct emu10k1x *emu = entry->private_data;
1029  unsigned long value,value1,value2;
1030  unsigned long flags;
1031  int i;
1032 
1033  snd_iprintf(buffer, "Registers:\n\n");
1034  for(i = 0; i < 0x20; i+=4) {
1035  spin_lock_irqsave(&emu->emu_lock, flags);
1036  value = inl(emu->port + i);
1037  spin_unlock_irqrestore(&emu->emu_lock, flags);
1038  snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1039  }
1040  snd_iprintf(buffer, "\nRegisters\n\n");
1041  for(i = 0; i <= 0x48; i++) {
1042  value = snd_emu10k1x_ptr_read(emu, i, 0);
1043  if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1044  value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1045  value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1046  snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1047  } else {
1048  snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1049  }
1050  }
1051 }
1052 
1053 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
1054  struct snd_info_buffer *buffer)
1055 {
1056  struct emu10k1x *emu = entry->private_data;
1057  char line[64];
1058  unsigned int reg, channel_id , val;
1059 
1060  while (!snd_info_get_line(buffer, line, sizeof(line))) {
1061  if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1062  continue;
1063 
1064  if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2)
1065  snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1066  }
1067 }
1068 
1069 static int __devinit snd_emu10k1x_proc_init(struct emu10k1x * emu)
1070 {
1071  struct snd_info_entry *entry;
1072 
1073  if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1074  snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
1075  entry->c.text.write = snd_emu10k1x_proc_reg_write;
1076  entry->mode |= S_IWUSR;
1077  entry->private_data = emu;
1078  }
1079 
1080  return 0;
1081 }
1082 
1083 #define snd_emu10k1x_shared_spdif_info snd_ctl_boolean_mono_info
1084 
1085 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1086  struct snd_ctl_elem_value *ucontrol)
1087 {
1088  struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1089 
1090  ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1091 
1092  return 0;
1093 }
1094 
1095 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1096  struct snd_ctl_elem_value *ucontrol)
1097 {
1098  struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1099  unsigned int val;
1100  int change = 0;
1101 
1102  val = ucontrol->value.integer.value[0] ;
1103 
1104  if (val) {
1105  // enable spdif output
1106  snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1107  snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1108  snd_emu10k1x_gpio_write(emu, 0x1000);
1109  } else {
1110  // disable spdif output
1111  snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1112  snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1113  snd_emu10k1x_gpio_write(emu, 0x1080);
1114  }
1115  return change;
1116 }
1117 
1118 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif __devinitdata =
1119 {
1120  .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1121  .name = "Analog/Digital Output Jack",
1122  .info = snd_emu10k1x_shared_spdif_info,
1123  .get = snd_emu10k1x_shared_spdif_get,
1124  .put = snd_emu10k1x_shared_spdif_put
1125 };
1126 
1127 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1128 {
1129  uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1130  uinfo->count = 1;
1131  return 0;
1132 }
1133 
1134 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1135  struct snd_ctl_elem_value *ucontrol)
1136 {
1137  struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1138  unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1139 
1140  ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1141  ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1142  ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1143  ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1144  return 0;
1145 }
1146 
1147 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1148  struct snd_ctl_elem_value *ucontrol)
1149 {
1150  ucontrol->value.iec958.status[0] = 0xff;
1151  ucontrol->value.iec958.status[1] = 0xff;
1152  ucontrol->value.iec958.status[2] = 0xff;
1153  ucontrol->value.iec958.status[3] = 0xff;
1154  return 0;
1155 }
1156 
1157 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1158  struct snd_ctl_elem_value *ucontrol)
1159 {
1160  struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1161  unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1162  int change;
1163  unsigned int val;
1164 
1165  val = (ucontrol->value.iec958.status[0] << 0) |
1166  (ucontrol->value.iec958.status[1] << 8) |
1167  (ucontrol->value.iec958.status[2] << 16) |
1168  (ucontrol->value.iec958.status[3] << 24);
1169  change = val != emu->spdif_bits[idx];
1170  if (change) {
1171  snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1172  emu->spdif_bits[idx] = val;
1173  }
1174  return change;
1175 }
1176 
1177 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1178 {
1179  .access = SNDRV_CTL_ELEM_ACCESS_READ,
1180  .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1181  .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1182  .count = 3,
1183  .info = snd_emu10k1x_spdif_info,
1184  .get = snd_emu10k1x_spdif_get_mask
1185 };
1186 
1187 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1188 {
1189  .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1190  .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1191  .count = 3,
1192  .info = snd_emu10k1x_spdif_info,
1193  .get = snd_emu10k1x_spdif_get,
1194  .put = snd_emu10k1x_spdif_put
1195 };
1196 
1197 static int __devinit snd_emu10k1x_mixer(struct emu10k1x *emu)
1198 {
1199  int err;
1200  struct snd_kcontrol *kctl;
1201  struct snd_card *card = emu->card;
1202 
1203  if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1204  return -ENOMEM;
1205  if ((err = snd_ctl_add(card, kctl)))
1206  return err;
1207  if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1208  return -ENOMEM;
1209  if ((err = snd_ctl_add(card, kctl)))
1210  return err;
1211  if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1212  return -ENOMEM;
1213  if ((err = snd_ctl_add(card, kctl)))
1214  return err;
1215 
1216  return 0;
1217 }
1218 
1219 #define EMU10K1X_MIDI_MODE_INPUT (1<<0)
1220 #define EMU10K1X_MIDI_MODE_OUTPUT (1<<1)
1221 
1222 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1223 {
1224  return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1225 }
1226 
1227 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1228 {
1229  snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1230 }
1231 
1232 #define mpu401_write_data(emu, mpu, data) mpu401_write(emu, mpu, data, 0)
1233 #define mpu401_write_cmd(emu, mpu, data) mpu401_write(emu, mpu, data, 1)
1234 #define mpu401_read_data(emu, mpu) mpu401_read(emu, mpu, 0)
1235 #define mpu401_read_stat(emu, mpu) mpu401_read(emu, mpu, 1)
1236 
1237 #define mpu401_input_avail(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x80))
1238 #define mpu401_output_ready(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x40))
1239 
1240 #define MPU401_RESET 0xff
1241 #define MPU401_ENTER_UART 0x3f
1242 #define MPU401_ACK 0xfe
1243 
1244 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1245 {
1246  int timeout = 100000;
1247  for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1248  mpu401_read_data(emu, mpu);
1249 #ifdef CONFIG_SND_DEBUG
1250  if (timeout <= 0)
1251  snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
1252 #endif
1253 }
1254 
1255 /*
1256 
1257  */
1258 
1259 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1260  struct emu10k1x_midi *midi, unsigned int status)
1261 {
1262  unsigned char byte;
1263 
1264  if (midi->rmidi == NULL) {
1265  snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1266  return;
1267  }
1268 
1269  spin_lock(&midi->input_lock);
1270  if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1271  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1272  mpu401_clear_rx(emu, midi);
1273  } else {
1274  byte = mpu401_read_data(emu, midi);
1275  if (midi->substream_input)
1276  snd_rawmidi_receive(midi->substream_input, &byte, 1);
1277  }
1278  }
1279  spin_unlock(&midi->input_lock);
1280 
1281  spin_lock(&midi->output_lock);
1282  if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1283  if (midi->substream_output &&
1284  snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1285  mpu401_write_data(emu, midi, byte);
1286  } else {
1287  snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1288  }
1289  }
1290  spin_unlock(&midi->output_lock);
1291 }
1292 
1293 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1294 {
1295  do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1296 }
1297 
1298 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1299  struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1300 {
1301  unsigned long flags;
1302  int timeout, ok;
1303 
1304  spin_lock_irqsave(&midi->input_lock, flags);
1305  mpu401_write_data(emu, midi, 0x00);
1306  /* mpu401_clear_rx(emu, midi); */
1307 
1308  mpu401_write_cmd(emu, midi, cmd);
1309  if (ack) {
1310  ok = 0;
1311  timeout = 10000;
1312  while (!ok && timeout-- > 0) {
1313  if (mpu401_input_avail(emu, midi)) {
1314  if (mpu401_read_data(emu, midi) == MPU401_ACK)
1315  ok = 1;
1316  }
1317  }
1318  if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1319  ok = 1;
1320  } else {
1321  ok = 1;
1322  }
1323  spin_unlock_irqrestore(&midi->input_lock, flags);
1324  if (!ok) {
1325  snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1326  cmd, emu->port,
1327  mpu401_read_stat(emu, midi),
1328  mpu401_read_data(emu, midi));
1329  return 1;
1330  }
1331  return 0;
1332 }
1333 
1334 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1335 {
1336  struct emu10k1x *emu;
1337  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1338  unsigned long flags;
1339 
1340  emu = midi->emu;
1341  if (snd_BUG_ON(!emu))
1342  return -ENXIO;
1343  spin_lock_irqsave(&midi->open_lock, flags);
1344  midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1345  midi->substream_input = substream;
1346  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1347  spin_unlock_irqrestore(&midi->open_lock, flags);
1348  if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1349  goto error_out;
1350  if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1351  goto error_out;
1352  } else {
1353  spin_unlock_irqrestore(&midi->open_lock, flags);
1354  }
1355  return 0;
1356 
1357 error_out:
1358  return -EIO;
1359 }
1360 
1361 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1362 {
1363  struct emu10k1x *emu;
1364  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1365  unsigned long flags;
1366 
1367  emu = midi->emu;
1368  if (snd_BUG_ON(!emu))
1369  return -ENXIO;
1370  spin_lock_irqsave(&midi->open_lock, flags);
1371  midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1372  midi->substream_output = substream;
1373  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1374  spin_unlock_irqrestore(&midi->open_lock, flags);
1375  if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1376  goto error_out;
1377  if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1378  goto error_out;
1379  } else {
1380  spin_unlock_irqrestore(&midi->open_lock, flags);
1381  }
1382  return 0;
1383 
1384 error_out:
1385  return -EIO;
1386 }
1387 
1388 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1389 {
1390  struct emu10k1x *emu;
1391  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1392  unsigned long flags;
1393  int err = 0;
1394 
1395  emu = midi->emu;
1396  if (snd_BUG_ON(!emu))
1397  return -ENXIO;
1398  spin_lock_irqsave(&midi->open_lock, flags);
1399  snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1400  midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1401  midi->substream_input = NULL;
1402  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1403  spin_unlock_irqrestore(&midi->open_lock, flags);
1404  err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1405  } else {
1406  spin_unlock_irqrestore(&midi->open_lock, flags);
1407  }
1408  return err;
1409 }
1410 
1411 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1412 {
1413  struct emu10k1x *emu;
1414  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1415  unsigned long flags;
1416  int err = 0;
1417 
1418  emu = midi->emu;
1419  if (snd_BUG_ON(!emu))
1420  return -ENXIO;
1421  spin_lock_irqsave(&midi->open_lock, flags);
1422  snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1423  midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1424  midi->substream_output = NULL;
1425  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1426  spin_unlock_irqrestore(&midi->open_lock, flags);
1427  err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1428  } else {
1429  spin_unlock_irqrestore(&midi->open_lock, flags);
1430  }
1431  return err;
1432 }
1433 
1434 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1435 {
1436  struct emu10k1x *emu;
1437  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1438  emu = midi->emu;
1439  if (snd_BUG_ON(!emu))
1440  return;
1441 
1442  if (up)
1443  snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1444  else
1445  snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1446 }
1447 
1448 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1449 {
1450  struct emu10k1x *emu;
1451  struct emu10k1x_midi *midi = substream->rmidi->private_data;
1452  unsigned long flags;
1453 
1454  emu = midi->emu;
1455  if (snd_BUG_ON(!emu))
1456  return;
1457 
1458  if (up) {
1459  int max = 4;
1460  unsigned char byte;
1461 
1462  /* try to send some amount of bytes here before interrupts */
1463  spin_lock_irqsave(&midi->output_lock, flags);
1464  while (max > 0) {
1465  if (mpu401_output_ready(emu, midi)) {
1466  if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1467  snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1468  /* no more data */
1469  spin_unlock_irqrestore(&midi->output_lock, flags);
1470  return;
1471  }
1472  mpu401_write_data(emu, midi, byte);
1473  max--;
1474  } else {
1475  break;
1476  }
1477  }
1478  spin_unlock_irqrestore(&midi->output_lock, flags);
1479  snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1480  } else {
1481  snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1482  }
1483 }
1484 
1485 /*
1486 
1487  */
1488 
1489 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1490 {
1491  .open = snd_emu10k1x_midi_output_open,
1492  .close = snd_emu10k1x_midi_output_close,
1493  .trigger = snd_emu10k1x_midi_output_trigger,
1494 };
1495 
1496 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1497 {
1498  .open = snd_emu10k1x_midi_input_open,
1499  .close = snd_emu10k1x_midi_input_close,
1500  .trigger = snd_emu10k1x_midi_input_trigger,
1501 };
1502 
1503 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1504 {
1505  struct emu10k1x_midi *midi = rmidi->private_data;
1506  midi->interrupt = NULL;
1507  midi->rmidi = NULL;
1508 }
1509 
1510 static int __devinit emu10k1x_midi_init(struct emu10k1x *emu,
1511  struct emu10k1x_midi *midi, int device, char *name)
1512 {
1513  struct snd_rawmidi *rmidi;
1514  int err;
1515 
1516  if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1517  return err;
1518  midi->emu = emu;
1519  spin_lock_init(&midi->open_lock);
1520  spin_lock_init(&midi->input_lock);
1521  spin_lock_init(&midi->output_lock);
1522  strcpy(rmidi->name, name);
1523  snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1524  snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1525  rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1526  SNDRV_RAWMIDI_INFO_INPUT |
1527  SNDRV_RAWMIDI_INFO_DUPLEX;
1528  rmidi->private_data = midi;
1529  rmidi->private_free = snd_emu10k1x_midi_free;
1530  midi->rmidi = rmidi;
1531  return 0;
1532 }
1533 
1534 static int __devinit snd_emu10k1x_midi(struct emu10k1x *emu)
1535 {
1536  struct emu10k1x_midi *midi = &emu->midi;
1537  int err;
1538 
1539  if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1540  return err;
1541 
1542  midi->tx_enable = INTE_MIDITXENABLE;
1543  midi->rx_enable = INTE_MIDIRXENABLE;
1544  midi->port = MUDATA;
1545  midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1546  midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1547  midi->interrupt = snd_emu10k1x_midi_interrupt;
1548  return 0;
1549 }
1550 
1551 static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
1552  const struct pci_device_id *pci_id)
1553 {
1554  static int dev;
1555  struct snd_card *card;
1556  struct emu10k1x *chip;
1557  int err;
1558 
1559  if (dev >= SNDRV_CARDS)
1560  return -ENODEV;
1561  if (!enable[dev]) {
1562  dev++;
1563  return -ENOENT;
1564  }
1565 
1566  err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
1567  if (err < 0)
1568  return err;
1569 
1570  if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1571  snd_card_free(card);
1572  return err;
1573  }
1574 
1575  if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1576  snd_card_free(card);
1577  return err;
1578  }
1579  if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1580  snd_card_free(card);
1581  return err;
1582  }
1583  if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1584  snd_card_free(card);
1585  return err;
1586  }
1587 
1588  if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1589  snd_card_free(card);
1590  return err;
1591  }
1592 
1593  if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1594  snd_card_free(card);
1595  return err;
1596  }
1597 
1598  if ((err = snd_emu10k1x_midi(chip)) < 0) {
1599  snd_card_free(card);
1600  return err;
1601  }
1602 
1603  snd_emu10k1x_proc_init(chip);
1604 
1605  strcpy(card->driver, "EMU10K1X");
1606  strcpy(card->shortname, "Dell Sound Blaster Live!");
1607  sprintf(card->longname, "%s at 0x%lx irq %i",
1608  card->shortname, chip->port, chip->irq);
1609 
1610  snd_card_set_dev(card, &pci->dev);
1611 
1612  if ((err = snd_card_register(card)) < 0) {
1613  snd_card_free(card);
1614  return err;
1615  }
1616 
1617  pci_set_drvdata(pci, card);
1618  dev++;
1619  return 0;
1620 }
1621 
1622 static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
1623 {
1624  snd_card_free(pci_get_drvdata(pci));
1625  pci_set_drvdata(pci, NULL);
1626 }
1627 
1628 // PCI IDs
1629 static DEFINE_PCI_DEVICE_TABLE(snd_emu10k1x_ids) = {
1630  { PCI_VDEVICE(CREATIVE, 0x0006), 0 }, /* Dell OEM version (EMU10K1) */
1631  { 0, }
1632 };
1633 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1634 
1635 // pci_driver definition
1636 static struct pci_driver emu10k1x_driver = {
1637  .name = KBUILD_MODNAME,
1638  .id_table = snd_emu10k1x_ids,
1639  .probe = snd_emu10k1x_probe,
1640  .remove = __devexit_p(snd_emu10k1x_remove),
1641 };
1642 
1643 module_pci_driver(emu10k1x_driver);
Generated on Thu Jan 10 2013 15:06:10 for Linux Kernel by   doxygen 1.8.2