Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

Linux/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 <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 <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 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 
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 channel
188  * Volume is controlled by the AC97 for the front and rear channels by
189  * the PCM Playback Volume, Sigmatel Surround Playback Volume and 
190  * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
191  * the front/rear channel mixing in the REAR OUT jack. When using the
192  * 4-Speaker Stereo, both front and rear channels will be mixed in the
193  * REAR OUT.
194  * The center/lfe channel has no volume control and cannot be muted during
195  * playback.
196  */
197 
198 struct emu10k1x_voice {
199         struct emu10k1x *emu;
200         int number;
201         int use;
202   
203         struct emu10k1x_pcm *epcm;
204 };
205 
206 struct emu10k1x_pcm {
207         struct emu10k1x *emu;
208         struct snd_pcm_substream *substream;
209         struct emu10k1x_voice *voice;
210         unsigned short running;
211 };
212 
213 struct emu10k1x_midi {
214         struct emu10k1x *emu;
215         struct snd_rawmidi *rmidi;
216         struct snd_rawmidi_substream *substream_input;
217         struct snd_rawmidi_substream *substream_output;
218         unsigned int midi_mode;
219         spinlock_t input_lock;
220         spinlock_t output_lock;
221         spinlock_t open_lock;
222         int tx_enable, rx_enable;
223         int port;
224         int ipr_tx, ipr_rx;
225         void (*interrupt)(struct emu10k1x *emu, unsigned int status);
226 };
227 
228 // definition of the chip-specific record
229 struct emu10k1x {
230         struct snd_card *card;
231         struct pci_dev *pci;
232 
233         unsigned long port;
234         struct resource *res_port;
235         int irq;
236 
237         unsigned char revision;         /* chip revision */
238         unsigned int serial;            /* serial number */
239         unsigned short model;           /* subsystem id */
240 
241         spinlock_t emu_lock;
242         spinlock_t voice_lock;
243 
244         struct snd_ac97 *ac97;
245         struct snd_pcm *pcm;
246 
247         struct emu10k1x_voice voices[3];
248         struct emu10k1x_voice capture_voice;
249         u32 spdif_bits[3]; // SPDIF out setup
250 
251         struct snd_dma_buffer dma_buffer;
252 
253         struct emu10k1x_midi midi;
254 };
255 
256 /* hardware definition */
257 static struct snd_pcm_hardware snd_emu10k1x_playback_hw = {
258         .info =                 (SNDRV_PCM_INFO_MMAP | 
259                                  SNDRV_PCM_INFO_INTERLEAVED |
260                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
261                                  SNDRV_PCM_INFO_MMAP_VALID),
262         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
263         .rates =                SNDRV_PCM_RATE_48000,
264         .rate_min =             48000,
265         .rate_max =             48000,
266         .channels_min =         2,
267         .channels_max =         2,
268         .buffer_bytes_max =     (32*1024),
269         .period_bytes_min =     64,
270         .period_bytes_max =     (16*1024),
271         .periods_min =          2,
272         .periods_max =          8,
273         .fifo_size =            0,
274 };
275 
276 static struct snd_pcm_hardware snd_emu10k1x_capture_hw = {
277         .info =                 (SNDRV_PCM_INFO_MMAP | 
278                                  SNDRV_PCM_INFO_INTERLEAVED |
279                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
280                                  SNDRV_PCM_INFO_MMAP_VALID),
281         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
282         .rates =                SNDRV_PCM_RATE_48000,
283         .rate_min =             48000,
284         .rate_max =             48000,
285         .channels_min =         2,
286         .channels_max =         2,
287         .buffer_bytes_max =     (32*1024),
288         .period_bytes_min =     64,
289         .period_bytes_max =     (16*1024),
290         .periods_min =          2,
291         .periods_max =          2,
292         .fifo_size =            0,
293 };
294 
295 static unsigned int snd_emu10k1x_ptr_read(struct emu10k1x * emu, 
296                                           unsigned int reg, 
297                                           unsigned int chn)
298 {
299         unsigned long flags;
300         unsigned int regptr, val;
301   
302         regptr = (reg << 16) | chn;
303 
304         spin_lock_irqsave(&emu->emu_lock, flags);
305         outl(regptr, emu->port + PTR);
306         val = inl(emu->port + DATA);
307         spin_unlock_irqrestore(&emu->emu_lock, flags);
308         return val;
309 }
310 
311 static void snd_emu10k1x_ptr_write(struct emu10k1x *emu, 
312                                    unsigned int reg, 
313                                    unsigned int chn, 
314                                    unsigned int data)
315 {
316         unsigned int regptr;
317         unsigned long flags;
318 
319         regptr = (reg << 16) | chn;
320 
321         spin_lock_irqsave(&emu->emu_lock, flags);
322         outl(regptr, emu->port + PTR);
323         outl(data, emu->port + DATA);
324         spin_unlock_irqrestore(&emu->emu_lock, flags);
325 }
326 
327 static void snd_emu10k1x_intr_enable(struct emu10k1x *emu, unsigned int intrenb)
328 {
329         unsigned long flags;
330         unsigned int intr_enable;
331 
332         spin_lock_irqsave(&emu->emu_lock, flags);
333         intr_enable = inl(emu->port + INTE) | intrenb;
334         outl(intr_enable, emu->port + INTE);
335         spin_unlock_irqrestore(&emu->emu_lock, flags);
336 }
337 
338 static void snd_emu10k1x_intr_disable(struct emu10k1x *emu, unsigned int intrenb)
339 {
340         unsigned long flags;
341         unsigned int intr_enable;
342 
343         spin_lock_irqsave(&emu->emu_lock, flags);
344         intr_enable = inl(emu->port + INTE) & ~intrenb;
345         outl(intr_enable, emu->port + INTE);
346         spin_unlock_irqrestore(&emu->emu_lock, flags);
347 }
348 
349 static void snd_emu10k1x_gpio_write(struct emu10k1x *emu, unsigned int value)
350 {
351         unsigned long flags;
352 
353         spin_lock_irqsave(&emu->emu_lock, flags);
354         outl(value, emu->port + GPIO);
355         spin_unlock_irqrestore(&emu->emu_lock, flags);
356 }
357 
358 static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
359 {
360         kfree(runtime->private_data);
361 }
362 
363 static void snd_emu10k1x_pcm_interrupt(struct emu10k1x *emu, struct emu10k1x_voice *voice)
364 {
365         struct emu10k1x_pcm *epcm;
366 
367         if ((epcm = voice->epcm) == NULL)
368                 return;
369         if (epcm->substream == NULL)
370                 return;
371 #if 0
372         dev_info(emu->card->dev,
373                  "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
374                    epcm->substream->ops->pointer(epcm->substream),
375                    snd_pcm_lib_period_bytes(epcm->substream),
376                    snd_pcm_lib_buffer_bytes(epcm->substream));
377 #endif
378         snd_pcm_period_elapsed(epcm->substream);
379 }
380 
381 /* open callback */
382 static int snd_emu10k1x_playback_open(struct snd_pcm_substream *substream)
383 {
384         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
385         struct emu10k1x_pcm *epcm;
386         struct snd_pcm_runtime *runtime = substream->runtime;
387         int err;
388 
389         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
390                 return err;
391         }
392         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
393                 return err;
394 
395         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
396         if (epcm == NULL)
397                 return -ENOMEM;
398         epcm->emu = chip;
399         epcm->substream = substream;
400   
401         runtime->private_data = epcm;
402         runtime->private_free = snd_emu10k1x_pcm_free_substream;
403   
404         runtime->hw = snd_emu10k1x_playback_hw;
405 
406         return 0;
407 }
408 
409 /* close callback */
410 static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
411 {
412         return 0;
413 }
414 
415 /* hw_params callback */
416 static int snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream *substream,
417                                       struct snd_pcm_hw_params *hw_params)
418 {
419         struct snd_pcm_runtime *runtime = substream->runtime;
420         struct emu10k1x_pcm *epcm = runtime->private_data;
421 
422         if (! epcm->voice) {
423                 epcm->voice = &epcm->emu->voices[substream->pcm->device];
424                 epcm->voice->use = 1;
425                 epcm->voice->epcm = epcm;
426         }
427 
428         return snd_pcm_lib_malloc_pages(substream,
429                                         params_buffer_bytes(hw_params));
430 }
431 
432 /* hw_free callback */
433 static int snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream *substream)
434 {
435         struct snd_pcm_runtime *runtime = substream->runtime;
436         struct emu10k1x_pcm *epcm;
437 
438         if (runtime->private_data == NULL)
439                 return 0;
440         
441         epcm = runtime->private_data;
442 
443         if (epcm->voice) {
444                 epcm->voice->use = 0;
445                 epcm->voice->epcm = NULL;
446                 epcm->voice = NULL;
447         }
448 
449         return snd_pcm_lib_free_pages(substream);
450 }
451 
452 /* prepare callback */
453 static int snd_emu10k1x_pcm_prepare(struct snd_pcm_substream *substream)
454 {
455         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
456         struct snd_pcm_runtime *runtime = substream->runtime;
457         struct emu10k1x_pcm *epcm = runtime->private_data;
458         int voice = epcm->voice->number;
459         u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
460         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
461         int i;
462         
463         for(i = 0; i < runtime->periods; i++) {
464                 *table_base++=runtime->dma_addr+(i*period_size_bytes);
465                 *table_base++=period_size_bytes<<16;
466         }
467 
468         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
469         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
470         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
471         snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
472         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
473         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
474         snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
475 
476         snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
477 
478         return 0;
479 }
480 
481 /* trigger callback */
482 static int snd_emu10k1x_pcm_trigger(struct snd_pcm_substream *substream,
483                                     int cmd)
484 {
485         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
486         struct snd_pcm_runtime *runtime = substream->runtime;
487         struct emu10k1x_pcm *epcm = runtime->private_data;
488         int channel = epcm->voice->number;
489         int result = 0;
490 
491         /*
492         dev_dbg(emu->card->dev,
493                 "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n",
494                 (int)emu, cmd, (int)substream->ops->pointer(substream));
495         */
496 
497         switch (cmd) {
498         case SNDRV_PCM_TRIGGER_START:
499                 if(runtime->periods == 2)
500                         snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
501                 else
502                         snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
503                 epcm->running = 1;
504                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
505                 break;
506         case SNDRV_PCM_TRIGGER_STOP:
507                 epcm->running = 0;
508                 snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
509                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
510                 break;
511         default:
512                 result = -EINVAL;
513                 break;
514         }
515         return result;
516 }
517 
518 /* pointer callback */
519 static snd_pcm_uframes_t
520 snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
521 {
522         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
523         struct snd_pcm_runtime *runtime = substream->runtime;
524         struct emu10k1x_pcm *epcm = runtime->private_data;
525         int channel = epcm->voice->number;
526         snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
527 
528         if (!epcm->running)
529                 return 0;
530 
531         ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
532         ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
533         ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
534 
535         if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
536                 return 0;
537         
538         if (ptr3 != ptr4) 
539                 ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
540         ptr2 = bytes_to_frames(runtime, ptr1);
541         ptr2 += (ptr4 >> 3) * runtime->period_size;
542         ptr = ptr2;
543 
544         if (ptr >= runtime->buffer_size)
545                 ptr -= runtime->buffer_size;
546 
547         return ptr;
548 }
549 
550 /* operators */
551 static struct snd_pcm_ops snd_emu10k1x_playback_ops = {
552         .open =        snd_emu10k1x_playback_open,
553         .close =       snd_emu10k1x_playback_close,
554         .ioctl =       snd_pcm_lib_ioctl,
555         .hw_params =   snd_emu10k1x_pcm_hw_params,
556         .hw_free =     snd_emu10k1x_pcm_hw_free,
557         .prepare =     snd_emu10k1x_pcm_prepare,
558         .trigger =     snd_emu10k1x_pcm_trigger,
559         .pointer =     snd_emu10k1x_pcm_pointer,
560 };
561 
562 /* open_capture callback */
563 static int snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream *substream)
564 {
565         struct emu10k1x *chip = snd_pcm_substream_chip(substream);
566         struct emu10k1x_pcm *epcm;
567         struct snd_pcm_runtime *runtime = substream->runtime;
568         int err;
569 
570         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
571                 return err;
572         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
573                 return err;
574 
575         epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
576         if (epcm == NULL)
577                 return -ENOMEM;
578 
579         epcm->emu = chip;
580         epcm->substream = substream;
581 
582         runtime->private_data = epcm;
583         runtime->private_free = snd_emu10k1x_pcm_free_substream;
584 
585         runtime->hw = snd_emu10k1x_capture_hw;
586 
587         return 0;
588 }
589 
590 /* close callback */
591 static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
592 {
593         return 0;
594 }
595 
596 /* hw_params callback */
597 static int snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream *substream,
598                                               struct snd_pcm_hw_params *hw_params)
599 {
600         struct snd_pcm_runtime *runtime = substream->runtime;
601         struct emu10k1x_pcm *epcm = runtime->private_data;
602 
603         if (! epcm->voice) {
604                 if (epcm->emu->capture_voice.use)
605                         return -EBUSY;
606                 epcm->voice = &epcm->emu->capture_voice;
607                 epcm->voice->epcm = epcm;
608                 epcm->voice->use = 1;
609         }
610 
611         return snd_pcm_lib_malloc_pages(substream,
612                                         params_buffer_bytes(hw_params));
613 }
614 
615 /* hw_free callback */
616 static int snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream *substream)
617 {
618         struct snd_pcm_runtime *runtime = substream->runtime;
619 
620         struct emu10k1x_pcm *epcm;
621 
622         if (runtime->private_data == NULL)
623                 return 0;
624         epcm = runtime->private_data;
625 
626         if (epcm->voice) {
627                 epcm->voice->use = 0;
628                 epcm->voice->epcm = NULL;
629                 epcm->voice = NULL;
630         }
631 
632         return snd_pcm_lib_free_pages(substream);
633 }
634 
635 /* prepare capture callback */
636 static int snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream *substream)
637 {
638         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
639         struct snd_pcm_runtime *runtime = substream->runtime;
640 
641         snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
642         snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
643         snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
644         snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
645 
646         return 0;
647 }
648 
649 /* trigger_capture callback */
650 static int snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream *substream,
651                                             int cmd)
652 {
653         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
654         struct snd_pcm_runtime *runtime = substream->runtime;
655         struct emu10k1x_pcm *epcm = runtime->private_data;
656         int result = 0;
657 
658         switch (cmd) {
659         case SNDRV_PCM_TRIGGER_START:
660                 snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP | 
661                                          INTE_CAP_0_HALF_LOOP);
662                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
663                 epcm->running = 1;
664                 break;
665         case SNDRV_PCM_TRIGGER_STOP:
666                 epcm->running = 0;
667                 snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP | 
668                                           INTE_CAP_0_HALF_LOOP);
669                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
670                 break;
671         default:
672                 result = -EINVAL;
673                 break;
674         }
675         return result;
676 }
677 
678 /* pointer_capture callback */
679 static snd_pcm_uframes_t
680 snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
681 {
682         struct emu10k1x *emu = snd_pcm_substream_chip(substream);
683         struct snd_pcm_runtime *runtime = substream->runtime;
684         struct emu10k1x_pcm *epcm = runtime->private_data;
685         snd_pcm_uframes_t ptr;
686 
687         if (!epcm->running)
688                 return 0;
689 
690         ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
691         if (ptr >= runtime->buffer_size)
692                 ptr -= runtime->buffer_size;
693 
694         return ptr;
695 }
696 
697 static struct snd_pcm_ops snd_emu10k1x_capture_ops = {
698         .open =        snd_emu10k1x_pcm_open_capture,
699         .close =       snd_emu10k1x_pcm_close_capture,
700         .ioctl =       snd_pcm_lib_ioctl,
701         .hw_params =   snd_emu10k1x_pcm_hw_params_capture,
702         .hw_free =     snd_emu10k1x_pcm_hw_free_capture,
703         .prepare =     snd_emu10k1x_pcm_prepare_capture,
704         .trigger =     snd_emu10k1x_pcm_trigger_capture,
705         .pointer =     snd_emu10k1x_pcm_pointer_capture,
706 };
707 
708 static unsigned short snd_emu10k1x_ac97_read(struct snd_ac97 *ac97,
709                                              unsigned short reg)
710 {
711         struct emu10k1x *emu = ac97->private_data;
712         unsigned long flags;
713         unsigned short val;
714   
715         spin_lock_irqsave(&emu->emu_lock, flags);
716         outb(reg, emu->port + AC97ADDRESS);
717         val = inw(emu->port + AC97DATA);
718         spin_unlock_irqrestore(&emu->emu_lock, flags);
719         return val;
720 }
721 
722 static void snd_emu10k1x_ac97_write(struct snd_ac97 *ac97,
723                                     unsigned short reg, unsigned short val)
724 {
725         struct emu10k1x *emu = ac97->private_data;
726         unsigned long flags;
727   
728         spin_lock_irqsave(&emu->emu_lock, flags);
729         outb(reg, emu->port + AC97ADDRESS);
730         outw(val, emu->port + AC97DATA);
731         spin_unlock_irqrestore(&emu->emu_lock, flags);
732 }
733 
734 static int snd_emu10k1x_ac97(struct emu10k1x *chip)
735 {
736         struct snd_ac97_bus *pbus;
737         struct snd_ac97_template ac97;
738         int err;
739         static struct snd_ac97_bus_ops ops = {
740                 .write = snd_emu10k1x_ac97_write,
741                 .read = snd_emu10k1x_ac97_read,
742         };
743   
744         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
745                 return err;
746         pbus->no_vra = 1; /* we don't need VRA */
747 
748         memset(&ac97, 0, sizeof(ac97));
749         ac97.private_data = chip;
750         ac97.scaps = AC97_SCAP_NO_SPDIF;
751         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
752 }
753 
754 static int snd_emu10k1x_free(struct emu10k1x *chip)
755 {
756         snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
757         // disable interrupts
758         outl(0, chip->port + INTE);
759         // disable audio
760         outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
761 
762         /* release the irq */
763         if (chip->irq >= 0)
764                 free_irq(chip->irq, chip);
765 
766         // release the i/o port
767         release_and_free_resource(chip->res_port);
768 
769         // release the DMA
770         if (chip->dma_buffer.area) {
771                 snd_dma_free_pages(&chip->dma_buffer);
772         }
773 
774         pci_disable_device(chip->pci);
775 
776         // release the data
777         kfree(chip);
778         return 0;
779 }
780 
781 static int snd_emu10k1x_dev_free(struct snd_device *device)
782 {
783         struct emu10k1x *chip = device->device_data;
784         return snd_emu10k1x_free(chip);
785 }
786 
787 static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id)
788 {
789         unsigned int status;
790 
791         struct emu10k1x *chip = dev_id;
792         struct emu10k1x_voice *pvoice = chip->voices;
793         int i;
794         int mask;
795 
796         status = inl(chip->port + IPR);
797 
798         if (! status)
799                 return IRQ_NONE;
800 
801         // capture interrupt
802         if (status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
803                 struct emu10k1x_voice *cap_voice = &chip->capture_voice;
804                 if (cap_voice->use)
805                         snd_emu10k1x_pcm_interrupt(chip, cap_voice);
806                 else
807                         snd_emu10k1x_intr_disable(chip, 
808                                                   INTE_CAP_0_LOOP |
809                                                   INTE_CAP_0_HALF_LOOP);
810         }
811                 
812         mask = IPR_CH_0_LOOP|IPR_CH_0_HALF_LOOP;
813         for (i = 0; i < 3; i++) {
814                 if (status & mask) {
815                         if (pvoice->use)
816                                 snd_emu10k1x_pcm_interrupt(chip, pvoice);
817                         else 
818                                 snd_emu10k1x_intr_disable(chip, mask);
819                 }
820                 pvoice++;
821                 mask <<= 1;
822         }
823                 
824         if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
825                 if (chip->midi.interrupt)
826                         chip->midi.interrupt(chip, status);
827                 else
828                         snd_emu10k1x_intr_disable(chip, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
829         }
830                 
831         // acknowledge the interrupt if necessary
832         outl(status, chip->port + IPR);
833 
834         /* dev_dbg(chip->card->dev, "interrupt %08x\n", status); */
835         return IRQ_HANDLED;
836 }
837 
838 static const struct snd_pcm_chmap_elem surround_map[] = {
839         { .channels = 2,
840           .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
841         { }
842 };
843 
844 static const struct snd_pcm_chmap_elem clfe_map[] = {
845         { .channels = 2,
846           .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
847         { }
848 };
849 
850 static int snd_emu10k1x_pcm(struct emu10k1x *emu, int device, struct snd_pcm **rpcm)
851 {
852         struct snd_pcm *pcm;
853         const struct snd_pcm_chmap_elem *map = NULL;
854         int err;
855         int capture = 0;
856   
857         if (rpcm)
858                 *rpcm = NULL;
859         if (device == 0)
860                 capture = 1;
861         
862         if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
863                 return err;
864   
865         pcm->private_data = emu;
866         
867         switch(device) {
868         case 0:
869                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
870                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
871                 break;
872         case 1:
873         case 2:
874                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
875                 break;
876         }
877 
878         pcm->info_flags = 0;
879         switch(device) {
880         case 0:
881                 strcpy(pcm->name, "EMU10K1X Front");
882                 map = snd_pcm_std_chmaps;
883                 break;
884         case 1:
885                 strcpy(pcm->name, "EMU10K1X Rear");
886                 map = surround_map;
887                 break;
888         case 2:
889                 strcpy(pcm->name, "EMU10K1X Center/LFE");
890                 map = clfe_map;
891                 break;
892         }
893         emu->pcm = pcm;
894 
895         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
896                                               snd_dma_pci_data(emu->pci), 
897                                               32*1024, 32*1024);
898   
899         err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
900                                      1 << 2, NULL);
901         if (err < 0)
902                 return err;
903 
904         if (rpcm)
905                 *rpcm = pcm;
906   
907         return 0;
908 }
909 
910 static int snd_emu10k1x_create(struct snd_card *card,
911                                struct pci_dev *pci,
912                                struct emu10k1x **rchip)
913 {
914         struct emu10k1x *chip;
915         int err;
916         int ch;
917         static struct snd_device_ops ops = {
918                 .dev_free = snd_emu10k1x_dev_free,
919         };
920 
921         *rchip = NULL;
922 
923         if ((err = pci_enable_device(pci)) < 0)
924                 return err;
925         if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
926             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
927                 dev_err(card->dev, "error to set 28bit mask DMA\n");
928                 pci_disable_device(pci);
929                 return -ENXIO;
930         }
931 
932         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
933         if (chip == NULL) {
934                 pci_disable_device(pci);
935                 return -ENOMEM;
936         }
937 
938         chip->card = card;
939         chip->pci = pci;
940         chip->irq = -1;
941 
942         spin_lock_init(&chip->emu_lock);
943         spin_lock_init(&chip->voice_lock);
944   
945         chip->port = pci_resource_start(pci, 0);
946         if ((chip->res_port = request_region(chip->port, 8,
947                                              "EMU10K1X")) == NULL) { 
948                 dev_err(card->dev, "cannot allocate the port 0x%lx\n",
949                         chip->port);
950                 snd_emu10k1x_free(chip);
951                 return -EBUSY;
952         }
953 
954         if (request_irq(pci->irq, snd_emu10k1x_interrupt,
955                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
956                 dev_err(card->dev, "cannot grab irq %d\n", pci->irq);
957                 snd_emu10k1x_free(chip);
958                 return -EBUSY;
959         }
960         chip->irq = pci->irq;
961   
962         if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
963                                4 * 1024, &chip->dma_buffer) < 0) {
964                 snd_emu10k1x_free(chip);
965                 return -ENOMEM;
966         }
967 
968         pci_set_master(pci);
969         /* read revision & serial */
970         chip->revision = pci->revision;
971         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
972         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
973         dev_info(card->dev, "Model %04x Rev %08x Serial %08x\n", chip->model,
974                    chip->revision, chip->serial);
975 
976         outl(0, chip->port + INTE);     
977 
978         for(ch = 0; ch < 3; ch++) {
979                 chip->voices[ch].emu = chip;
980                 chip->voices[ch].number = ch;
981         }
982 
983         /*
984          *  Init to 0x02109204 :
985          *  Clock accuracy    = 0     (1000ppm)
986          *  Sample Rate       = 2     (48kHz)
987          *  Audio Channel     = 1     (Left of 2)
988          *  Source Number     = 0     (Unspecified)
989          *  Generation Status = 1     (Original for Cat Code 12)
990          *  Cat Code          = 12    (Digital Signal Mixer)
991          *  Mode              = 0     (Mode 0)
992          *  Emphasis          = 0     (None)
993          *  CP                = 1     (Copyright unasserted)
994          *  AN                = 0     (Audio data)
995          *  P                 = 0     (Consumer)
996          */
997         snd_emu10k1x_ptr_write(chip, SPCS0, 0,
998                                chip->spdif_bits[0] = 
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, SPCS1, 0,
1004                                chip->spdif_bits[1] = 
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         snd_emu10k1x_ptr_write(chip, SPCS2, 0,
1010                                chip->spdif_bits[2] = 
1011                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1012                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1013                                SPCS_GENERATIONSTATUS | 0x00001200 |
1014                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1015 
1016         snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
1017         snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
1018         snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
1019 
1020         outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
1021 
1022         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1023                                   chip, &ops)) < 0) {
1024                 snd_emu10k1x_free(chip);
1025                 return err;
1026         }
1027         *rchip = chip;
1028         return 0;
1029 }
1030 
1031 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry, 
1032                                        struct snd_info_buffer *buffer)
1033 {
1034         struct emu10k1x *emu = entry->private_data;
1035         unsigned long value,value1,value2;
1036         unsigned long flags;
1037         int i;
1038 
1039         snd_iprintf(buffer, "Registers:\n\n");
1040         for(i = 0; i < 0x20; i+=4) {
1041                 spin_lock_irqsave(&emu->emu_lock, flags);
1042                 value = inl(emu->port + i);
1043                 spin_unlock_irqrestore(&emu->emu_lock, flags);
1044                 snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1045         }
1046         snd_iprintf(buffer, "\nRegisters\n\n");
1047         for(i = 0; i <= 0x48; i++) {
1048                 value = snd_emu10k1x_ptr_read(emu, i, 0);
1049                 if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1050                         value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1051                         value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1052                         snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1053                 } else {
1054                         snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1055                 }
1056         }
1057 }
1058 
1059 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry, 
1060                                         struct snd_info_buffer *buffer)
1061 {
1062         struct emu10k1x *emu = entry->private_data;
1063         char line[64];
1064         unsigned int reg, channel_id , val;
1065 
1066         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1067                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1068                         continue;
1069 
1070                 if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2)
1071                         snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1072         }
1073 }
1074 
1075 static int snd_emu10k1x_proc_init(struct emu10k1x *emu)
1076 {
1077         struct snd_info_entry *entry;
1078         
1079         if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1080                 snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
1081                 entry->c.text.write = snd_emu10k1x_proc_reg_write;
1082                 entry->mode |= S_IWUSR;
1083                 entry->private_data = emu;
1084         }
1085         
1086         return 0;
1087 }
1088 
1089 #define snd_emu10k1x_shared_spdif_info  snd_ctl_boolean_mono_info
1090 
1091 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1092                                          struct snd_ctl_elem_value *ucontrol)
1093 {
1094         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1095 
1096         ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1097 
1098         return 0;
1099 }
1100 
1101 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1102                                          struct snd_ctl_elem_value *ucontrol)
1103 {
1104         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1105         unsigned int val;
1106         int change = 0;
1107 
1108         val = ucontrol->value.integer.value[0] ;
1109 
1110         if (val) {
1111                 // enable spdif output
1112                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1113                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1114                 snd_emu10k1x_gpio_write(emu, 0x1000);
1115         } else {
1116                 // disable spdif output
1117                 snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1118                 snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1119                 snd_emu10k1x_gpio_write(emu, 0x1080);
1120         }
1121         return change;
1122 }
1123 
1124 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif =
1125 {
1126         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
1127         .name =         "Analog/Digital Output Jack",
1128         .info =         snd_emu10k1x_shared_spdif_info,
1129         .get =          snd_emu10k1x_shared_spdif_get,
1130         .put =          snd_emu10k1x_shared_spdif_put
1131 };
1132 
1133 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1134 {
1135         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1136         uinfo->count = 1;
1137         return 0;
1138 }
1139 
1140 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1141                                   struct snd_ctl_elem_value *ucontrol)
1142 {
1143         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1144         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1145 
1146         ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1147         ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1148         ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1149         ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1150         return 0;
1151 }
1152 
1153 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1154                                        struct snd_ctl_elem_value *ucontrol)
1155 {
1156         ucontrol->value.iec958.status[0] = 0xff;
1157         ucontrol->value.iec958.status[1] = 0xff;
1158         ucontrol->value.iec958.status[2] = 0xff;
1159         ucontrol->value.iec958.status[3] = 0xff;
1160         return 0;
1161 }
1162 
1163 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1164                                   struct snd_ctl_elem_value *ucontrol)
1165 {
1166         struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1167         unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1168         int change;
1169         unsigned int val;
1170 
1171         val = (ucontrol->value.iec958.status[0] << 0) |
1172                 (ucontrol->value.iec958.status[1] << 8) |
1173                 (ucontrol->value.iec958.status[2] << 16) |
1174                 (ucontrol->value.iec958.status[3] << 24);
1175         change = val != emu->spdif_bits[idx];
1176         if (change) {
1177                 snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1178                 emu->spdif_bits[idx] = val;
1179         }
1180         return change;
1181 }
1182 
1183 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1184 {
1185         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1186         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1187         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1188         .count =        3,
1189         .info =         snd_emu10k1x_spdif_info,
1190         .get =          snd_emu10k1x_spdif_get_mask
1191 };
1192 
1193 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1194 {
1195         .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1196         .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1197         .count =        3,
1198         .info =         snd_emu10k1x_spdif_info,
1199         .get =          snd_emu10k1x_spdif_get,
1200         .put =          snd_emu10k1x_spdif_put
1201 };
1202 
1203 static int snd_emu10k1x_mixer(struct emu10k1x *emu)
1204 {
1205         int err;
1206         struct snd_kcontrol *kctl;
1207         struct snd_card *card = emu->card;
1208 
1209         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1210                 return -ENOMEM;
1211         if ((err = snd_ctl_add(card, kctl)))
1212                 return err;
1213         if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1214                 return -ENOMEM;
1215         if ((err = snd_ctl_add(card, kctl)))
1216                 return err;
1217         if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1218                 return -ENOMEM;
1219         if ((err = snd_ctl_add(card, kctl)))
1220                 return err;
1221 
1222         return 0;
1223 }
1224 
1225 #define EMU10K1X_MIDI_MODE_INPUT        (1<<0)
1226 #define EMU10K1X_MIDI_MODE_OUTPUT       (1<<1)
1227 
1228 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1229 {
1230         return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1231 }
1232 
1233 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1234 {
1235         snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1236 }
1237 
1238 #define mpu401_write_data(emu, mpu, data)       mpu401_write(emu, mpu, data, 0)
1239 #define mpu401_write_cmd(emu, mpu, data)        mpu401_write(emu, mpu, data, 1)
1240 #define mpu401_read_data(emu, mpu)              mpu401_read(emu, mpu, 0)
1241 #define mpu401_read_stat(emu, mpu)              mpu401_read(emu, mpu, 1)
1242 
1243 #define mpu401_input_avail(emu,mpu)     (!(mpu401_read_stat(emu,mpu) & 0x80))
1244 #define mpu401_output_ready(emu,mpu)    (!(mpu401_read_stat(emu,mpu) & 0x40))
1245 
1246 #define MPU401_RESET            0xff
1247 #define MPU401_ENTER_UART       0x3f
1248 #define MPU401_ACK              0xfe
1249 
1250 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1251 {
1252         int timeout = 100000;
1253         for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1254                 mpu401_read_data(emu, mpu);
1255 #ifdef CONFIG_SND_DEBUG
1256         if (timeout <= 0)
1257                 dev_err(emu->card->dev,
1258                         "cmd: clear rx timeout (status = 0x%x)\n",
1259                         mpu401_read_stat(emu, mpu));
1260 #endif
1261 }
1262 
1263 /*
1264 
1265  */
1266 
1267 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1268                                        struct emu10k1x_midi *midi, unsigned int status)
1269 {
1270         unsigned char byte;
1271 
1272         if (midi->rmidi == NULL) {
1273                 snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1274                 return;
1275         }
1276 
1277         spin_lock(&midi->input_lock);
1278         if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1279                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1280                         mpu401_clear_rx(emu, midi);
1281                 } else {
1282                         byte = mpu401_read_data(emu, midi);
1283                         if (midi->substream_input)
1284                                 snd_rawmidi_receive(midi->substream_input, &byte, 1);
1285                 }
1286         }
1287         spin_unlock(&midi->input_lock);
1288 
1289         spin_lock(&midi->output_lock);
1290         if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1291                 if (midi->substream_output &&
1292                     snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1293                         mpu401_write_data(emu, midi, byte);
1294                 } else {
1295                         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1296                 }
1297         }
1298         spin_unlock(&midi->output_lock);
1299 }
1300 
1301 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1302 {
1303         do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1304 }
1305 
1306 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1307                                   struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1308 {
1309         unsigned long flags;
1310         int timeout, ok;
1311 
1312         spin_lock_irqsave(&midi->input_lock, flags);
1313         mpu401_write_data(emu, midi, 0x00);
1314         /* mpu401_clear_rx(emu, midi); */
1315 
1316         mpu401_write_cmd(emu, midi, cmd);
1317         if (ack) {
1318                 ok = 0;
1319                 timeout = 10000;
1320                 while (!ok && timeout-- > 0) {
1321                         if (mpu401_input_avail(emu, midi)) {
1322                                 if (mpu401_read_data(emu, midi) == MPU401_ACK)
1323                                         ok = 1;
1324                         }
1325                 }
1326                 if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1327                         ok = 1;
1328         } else {
1329                 ok = 1;
1330         }
1331         spin_unlock_irqrestore(&midi->input_lock, flags);
1332         if (!ok) {
1333                 dev_err(emu->card->dev,
1334                         "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1335                            cmd, emu->port,
1336                            mpu401_read_stat(emu, midi),
1337                            mpu401_read_data(emu, midi));
1338                 return 1;
1339         }
1340         return 0;
1341 }
1342 
1343 static int snd_emu10k1x_midi_input_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         if (snd_BUG_ON(!emu))
1351                 return -ENXIO;
1352         spin_lock_irqsave(&midi->open_lock, flags);
1353         midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1354         midi->substream_input = substream;
1355         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1356                 spin_unlock_irqrestore(&midi->open_lock, flags);
1357                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1358                         goto error_out;
1359                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1360                         goto error_out;
1361         } else {
1362                 spin_unlock_irqrestore(&midi->open_lock, flags);
1363         }
1364         return 0;
1365 
1366 error_out:
1367         return -EIO;
1368 }
1369 
1370 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1371 {
1372         struct emu10k1x *emu;
1373         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1374         unsigned long flags;
1375 
1376         emu = midi->emu;
1377         if (snd_BUG_ON(!emu))
1378                 return -ENXIO;
1379         spin_lock_irqsave(&midi->open_lock, flags);
1380         midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1381         midi->substream_output = substream;
1382         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1383                 spin_unlock_irqrestore(&midi->open_lock, flags);
1384                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1385                         goto error_out;
1386                 if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1387                         goto error_out;
1388         } else {
1389                 spin_unlock_irqrestore(&midi->open_lock, flags);
1390         }
1391         return 0;
1392 
1393 error_out:
1394         return -EIO;
1395 }
1396 
1397 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1398 {
1399         struct emu10k1x *emu;
1400         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1401         unsigned long flags;
1402         int err = 0;
1403 
1404         emu = midi->emu;
1405         if (snd_BUG_ON(!emu))
1406                 return -ENXIO;
1407         spin_lock_irqsave(&midi->open_lock, flags);
1408         snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1409         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1410         midi->substream_input = NULL;
1411         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1412                 spin_unlock_irqrestore(&midi->open_lock, flags);
1413                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1414         } else {
1415                 spin_unlock_irqrestore(&midi->open_lock, flags);
1416         }
1417         return err;
1418 }
1419 
1420 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1421 {
1422         struct emu10k1x *emu;
1423         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1424         unsigned long flags;
1425         int err = 0;
1426 
1427         emu = midi->emu;
1428         if (snd_BUG_ON(!emu))
1429                 return -ENXIO;
1430         spin_lock_irqsave(&midi->open_lock, flags);
1431         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1432         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1433         midi->substream_output = NULL;
1434         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1435                 spin_unlock_irqrestore(&midi->open_lock, flags);
1436                 err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1437         } else {
1438                 spin_unlock_irqrestore(&midi->open_lock, flags);
1439         }
1440         return err;
1441 }
1442 
1443 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1444 {
1445         struct emu10k1x *emu;
1446         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1447         emu = midi->emu;
1448         if (snd_BUG_ON(!emu))
1449                 return;
1450 
1451         if (up)
1452                 snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1453         else
1454                 snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1455 }
1456 
1457 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1458 {
1459         struct emu10k1x *emu;
1460         struct emu10k1x_midi *midi = substream->rmidi->private_data;
1461         unsigned long flags;
1462 
1463         emu = midi->emu;
1464         if (snd_BUG_ON(!emu))
1465                 return;
1466 
1467         if (up) {
1468                 int max = 4;
1469                 unsigned char byte;
1470         
1471                 /* try to send some amount of bytes here before interrupts */
1472                 spin_lock_irqsave(&midi->output_lock, flags);
1473                 while (max > 0) {
1474                         if (mpu401_output_ready(emu, midi)) {
1475                                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1476                                     snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1477                                         /* no more data */
1478                                         spin_unlock_irqrestore(&midi->output_lock, flags);
1479                                         return;
1480                                 }
1481                                 mpu401_write_data(emu, midi, byte);
1482                                 max--;
1483                         } else {
1484                                 break;
1485                         }
1486                 }
1487                 spin_unlock_irqrestore(&midi->output_lock, flags);
1488                 snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1489         } else {
1490                 snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1491         }
1492 }
1493 
1494 /*
1495 
1496  */
1497 
1498 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1499 {
1500         .open =         snd_emu10k1x_midi_output_open,
1501         .close =        snd_emu10k1x_midi_output_close,
1502         .trigger =      snd_emu10k1x_midi_output_trigger,
1503 };
1504 
1505 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1506 {
1507         .open =         snd_emu10k1x_midi_input_open,
1508         .close =        snd_emu10k1x_midi_input_close,
1509         .trigger =      snd_emu10k1x_midi_input_trigger,
1510 };
1511 
1512 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1513 {
1514         struct emu10k1x_midi *midi = rmidi->private_data;
1515         midi->interrupt = NULL;
1516         midi->rmidi = NULL;
1517 }
1518 
1519 static int emu10k1x_midi_init(struct emu10k1x *emu,
1520                               struct emu10k1x_midi *midi, int device,
1521                               char *name)
1522 {
1523         struct snd_rawmidi *rmidi;
1524         int err;
1525 
1526         if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1527                 return err;
1528         midi->emu = emu;
1529         spin_lock_init(&midi->open_lock);
1530         spin_lock_init(&midi->input_lock);
1531         spin_lock_init(&midi->output_lock);
1532         strcpy(rmidi->name, name);
1533         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1534         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1535         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1536                              SNDRV_RAWMIDI_INFO_INPUT |
1537                              SNDRV_RAWMIDI_INFO_DUPLEX;
1538         rmidi->private_data = midi;
1539         rmidi->private_free = snd_emu10k1x_midi_free;
1540         midi->rmidi = rmidi;
1541         return 0;
1542 }
1543 
1544 static int snd_emu10k1x_midi(struct emu10k1x *emu)
1545 {
1546         struct emu10k1x_midi *midi = &emu->midi;
1547         int err;
1548 
1549         if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1550                 return err;
1551 
1552         midi->tx_enable = INTE_MIDITXENABLE;
1553         midi->rx_enable = INTE_MIDIRXENABLE;
1554         midi->port = MUDATA;
1555         midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1556         midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1557         midi->interrupt = snd_emu10k1x_midi_interrupt;
1558         return 0;
1559 }
1560 
1561 static int snd_emu10k1x_probe(struct pci_dev *pci,
1562                               const struct pci_device_id *pci_id)
1563 {
1564         static int dev;
1565         struct snd_card *card;
1566         struct emu10k1x *chip;
1567         int err;
1568 
1569         if (dev >= SNDRV_CARDS)
1570                 return -ENODEV;
1571         if (!enable[dev]) {
1572                 dev++;
1573                 return -ENOENT;
1574         }
1575 
1576         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1577                            0, &card);
1578         if (err < 0)
1579                 return err;
1580 
1581         if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1582                 snd_card_free(card);
1583                 return err;
1584         }
1585 
1586         if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1587                 snd_card_free(card);
1588                 return err;
1589         }
1590         if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1591                 snd_card_free(card);
1592                 return err;
1593         }
1594         if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1595                 snd_card_free(card);
1596                 return err;
1597         }
1598 
1599         if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1600                 snd_card_free(card);
1601                 return err;
1602         }
1603 
1604         if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1605                 snd_card_free(card);
1606                 return err;
1607         }
1608         
1609         if ((err = snd_emu10k1x_midi(chip)) < 0) {
1610                 snd_card_free(card);
1611                 return err;
1612         }
1613 
1614         snd_emu10k1x_proc_init(chip);
1615 
1616         strcpy(card->driver, "EMU10K1X");
1617         strcpy(card->shortname, "Dell Sound Blaster Live!");
1618         sprintf(card->longname, "%s at 0x%lx irq %i",
1619                 card->shortname, chip->port, chip->irq);
1620 
1621         if ((err = snd_card_register(card)) < 0) {
1622                 snd_card_free(card);
1623                 return err;
1624         }
1625 
1626         pci_set_drvdata(pci, card);
1627         dev++;
1628         return 0;
1629 }
1630 
1631 static void snd_emu10k1x_remove(struct pci_dev *pci)
1632 {
1633         snd_card_free(pci_get_drvdata(pci));
1634 }
1635 
1636 // PCI IDs
1637 static DEFINE_PCI_DEVICE_TABLE(snd_emu10k1x_ids) = {
1638         { PCI_VDEVICE(CREATIVE, 0x0006), 0 },   /* Dell OEM version (EMU10K1) */
1639         { 0, }
1640 };
1641 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1642 
1643 // pci_driver definition
1644 static struct pci_driver emu10k1x_driver = {
1645         .name = KBUILD_MODNAME,
1646         .id_table = snd_emu10k1x_ids,
1647         .probe = snd_emu10k1x_probe,
1648         .remove = snd_emu10k1x_remove,
1649 };
1650 
1651 module_pci_driver(emu10k1x_driver);
1652 

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