[ALSA] Remove redundant NULL checks before kfree
[linux-2.6.git] / sound / pci / emu10k1 / emu10k1x.c
1 /*
2  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
3  *  Driver EMU10K1X chips
4  *
5  *  Parts of this code were adapted from audigyls.c driver which is
6  *  Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
7  *
8  *  BUGS:
9  *    --
10  *
11  *  TODO:
12  *
13  *  Chips (SB0200 model):
14  *    - EMU10K1X-DBQ
15  *    - STAC 9708T
16  *
17  *   This program is free software; you can redistribute it and/or modify
18  *   it under the terms of the GNU General Public License as published by
19  *   the Free Software Foundation; either version 2 of the License, or
20  *   (at your option) any later version.
21  *
22  *   This program is distributed in the hope that it will be useful,
23  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
24  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25  *   GNU General Public License for more details.
26  *
27  *   You should have received a copy of the GNU General Public License
28  *   along with this program; if not, write to the Free Software
29  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
30  *
31  */
32 #include <sound/driver.h>
33 #include <linux/init.h>
34 #include <linux/interrupt.h>
35 #include <linux/pci.h>
36 #include <linux/slab.h>
37 #include <linux/moduleparam.h>
38 #include <sound/core.h>
39 #include <sound/initval.h>
40 #include <sound/pcm.h>
41 #include <sound/ac97_codec.h>
42 #include <sound/info.h>
43 #include <sound/rawmidi.h>
44
45 MODULE_AUTHOR("Francisco Moraes <fmoraes@nc.rr.com>");
46 MODULE_DESCRIPTION("EMU10K1X");
47 MODULE_LICENSE("GPL");
48 MODULE_SUPPORTED_DEVICE("{{Dell Creative Labs,SB Live!}");
49
50 // module parameters (see "Module Parameters")
51 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
52 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
53 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
54
55 module_param_array(index, int, NULL, 0444);
56 MODULE_PARM_DESC(index, "Index value for the EMU10K1X soundcard.");
57 module_param_array(id, charp, NULL, 0444);
58 MODULE_PARM_DESC(id, "ID string for the EMU10K1X soundcard.");
59 module_param_array(enable, bool, NULL, 0444);
60 MODULE_PARM_DESC(enable, "Enable the EMU10K1X soundcard.");
61
62
63 // some definitions were borrowed from emu10k1 driver as they seem to be the same
64 /************************************************************************************************/
65 /* PCI function 0 registers, address = <val> + PCIBASE0                                         */
66 /************************************************************************************************/
67
68 #define PTR                     0x00            /* Indexed register set pointer register        */
69                                                 /* NOTE: The CHANNELNUM and ADDRESS words can   */
70                                                 /* be modified independently of each other.     */
71
72 #define DATA                    0x04            /* Indexed register set data register           */
73
74 #define IPR                     0x08            /* Global interrupt pending register            */
75                                                 /* Clear pending interrupts by writing a 1 to   */
76                                                 /* the relevant bits and zero to the other bits */
77 #define IPR_MIDITRANSBUFEMPTY   0x00000001      /* MIDI UART transmit buffer empty              */
78 #define IPR_MIDIRECVBUFEMPTY    0x00000002      /* MIDI UART receive buffer empty               */
79 #define IPR_CH_0_LOOP           0x00000800      /* Channel 0 loop                               */
80 #define IPR_CH_0_HALF_LOOP      0x00000100      /* Channel 0 half loop                          */
81 #define IPR_CAP_0_LOOP          0x00080000      /* Channel capture loop                         */
82 #define IPR_CAP_0_HALF_LOOP     0x00010000      /* Channel capture half loop                    */
83
84 #define INTE                    0x0c            /* Interrupt enable register                    */
85 #define INTE_MIDITXENABLE       0x00000001      /* Enable MIDI transmit-buffer-empty interrupts */
86 #define INTE_MIDIRXENABLE       0x00000002      /* Enable MIDI receive-buffer-empty interrupts  */
87 #define INTE_CH_0_LOOP          0x00000800      /* Channel 0 loop                               */
88 #define INTE_CH_0_HALF_LOOP     0x00000100      /* Channel 0 half loop                          */
89 #define INTE_CAP_0_LOOP         0x00080000      /* Channel capture loop                         */
90 #define INTE_CAP_0_HALF_LOOP    0x00010000      /* Channel capture half loop                    */
91
92 #define HCFG                    0x14            /* Hardware config register                     */
93
94 #define HCFG_LOCKSOUNDCACHE     0x00000008      /* 1 = Cancel bustmaster accesses to soundcache */
95                                                 /* NOTE: This should generally never be used.   */
96 #define HCFG_AUDIOENABLE        0x00000001      /* 0 = CODECs transmit zero-valued samples      */
97                                                 /* Should be set to 1 when the EMU10K1 is       */
98                                                 /* completely initialized.                      */
99 #define GPIO                    0x18            /* Defaults: 00001080-Analog, 00001000-SPDIF.   */
100
101
102 #define AC97DATA                0x1c            /* AC97 register set data register (16 bit)     */
103
104 #define AC97ADDRESS             0x1e            /* AC97 register set address register (8 bit)   */
105
106 /********************************************************************************************************/
107 /* Emu10k1x pointer-offset register set, accessed through the PTR and DATA registers                    */
108 /********************************************************************************************************/
109 #define PLAYBACK_LIST_ADDR      0x00            /* Base DMA address of a list of pointers to each period/size */
110                                                 /* One list entry: 4 bytes for DMA address, 
111                                                  * 4 bytes for period_size << 16.
112                                                  * One list entry is 8 bytes long.
113                                                  * One list entry for each period in the buffer.
114                                                  */
115 #define PLAYBACK_LIST_SIZE      0x01            /* Size of list in bytes << 16. E.g. 8 periods -> 0x00380000  */
116 #define PLAYBACK_LIST_PTR       0x02            /* Pointer to the current period being played */
117 #define PLAYBACK_DMA_ADDR       0x04            /* Playback DMA addresss */
118 #define PLAYBACK_PERIOD_SIZE    0x05            /* Playback period size */
119 #define PLAYBACK_POINTER        0x06            /* Playback period pointer. Sample currently in DAC */
120 #define PLAYBACK_UNKNOWN1       0x07
121 #define PLAYBACK_UNKNOWN2       0x08
122
123 /* Only one capture channel supported */
124 #define CAPTURE_DMA_ADDR        0x10            /* Capture DMA address */
125 #define CAPTURE_BUFFER_SIZE     0x11            /* Capture buffer size */
126 #define CAPTURE_POINTER         0x12            /* Capture buffer pointer. Sample currently in ADC */
127 #define CAPTURE_UNKNOWN         0x13
128
129 /* From 0x20 - 0x3f, last samples played on each channel */
130
131 #define TRIGGER_CHANNEL         0x40            /* Trigger channel playback                     */
132 #define TRIGGER_CHANNEL_0       0x00000001      /* Trigger channel 0                            */
133 #define TRIGGER_CHANNEL_1       0x00000002      /* Trigger channel 1                            */
134 #define TRIGGER_CHANNEL_2       0x00000004      /* Trigger channel 2                            */
135 #define TRIGGER_CAPTURE         0x00000100      /* Trigger capture channel                      */
136
137 #define ROUTING                 0x41            /* Setup sound routing ?                        */
138 #define ROUTING_FRONT_LEFT      0x00000001
139 #define ROUTING_FRONT_RIGHT     0x00000002
140 #define ROUTING_REAR_LEFT       0x00000004
141 #define ROUTING_REAR_RIGHT      0x00000008
142 #define ROUTING_CENTER_LFE      0x00010000
143
144 #define SPCS0                   0x42            /* SPDIF output Channel Status 0 register       */
145
146 #define SPCS1                   0x43            /* SPDIF output Channel Status 1 register       */
147
148 #define SPCS2                   0x44            /* SPDIF output Channel Status 2 register       */
149
150 #define SPCS_CLKACCYMASK        0x30000000      /* Clock accuracy                               */
151 #define SPCS_CLKACCY_1000PPM    0x00000000      /* 1000 parts per million                       */
152 #define SPCS_CLKACCY_50PPM      0x10000000      /* 50 parts per million                         */
153 #define SPCS_CLKACCY_VARIABLE   0x20000000      /* Variable accuracy                            */
154 #define SPCS_SAMPLERATEMASK     0x0f000000      /* Sample rate                                  */
155 #define SPCS_SAMPLERATE_44      0x00000000      /* 44.1kHz sample rate                          */
156 #define SPCS_SAMPLERATE_48      0x02000000      /* 48kHz sample rate                            */
157 #define SPCS_SAMPLERATE_32      0x03000000      /* 32kHz sample rate                            */
158 #define SPCS_CHANNELNUMMASK     0x00f00000      /* Channel number                               */
159 #define SPCS_CHANNELNUM_UNSPEC  0x00000000      /* Unspecified channel number                   */
160 #define SPCS_CHANNELNUM_LEFT    0x00100000      /* Left channel                                 */
161 #define SPCS_CHANNELNUM_RIGHT   0x00200000      /* Right channel                                */
162 #define SPCS_SOURCENUMMASK      0x000f0000      /* Source number                                */
163 #define SPCS_SOURCENUM_UNSPEC   0x00000000      /* Unspecified source number                    */
164 #define SPCS_GENERATIONSTATUS   0x00008000      /* Originality flag (see IEC-958 spec)          */
165 #define SPCS_CATEGORYCODEMASK   0x00007f00      /* Category code (see IEC-958 spec)             */
166 #define SPCS_MODEMASK           0x000000c0      /* Mode (see IEC-958 spec)                      */
167 #define SPCS_EMPHASISMASK       0x00000038      /* Emphasis                                     */
168 #define SPCS_EMPHASIS_NONE      0x00000000      /* No emphasis                                  */
169 #define SPCS_EMPHASIS_50_15     0x00000008      /* 50/15 usec 2 channel                         */
170 #define SPCS_COPYRIGHT          0x00000004      /* Copyright asserted flag -- do not modify     */
171 #define SPCS_NOTAUDIODATA       0x00000002      /* 0 = Digital audio, 1 = not audio             */
172 #define SPCS_PROFESSIONAL       0x00000001      /* 0 = Consumer (IEC-958), 1 = pro (AES3-1992)  */
173
174 #define SPDIF_SELECT            0x45            /* Enables SPDIF or Analogue outputs 0-Analogue, 0x700-SPDIF */
175
176 /* This is the MPU port on the card                                                             */
177 #define MUDATA          0x47
178 #define MUCMD           0x48
179 #define MUSTAT          MUCMD
180
181 /* From 0x50 - 0x5f, last samples captured */
182
183 /**
184  * The hardware has 3 channels for playback and 1 for capture.
185  *  - channel 0 is the front channel
186  *  - channel 1 is the rear channel
187  *  - channel 2 is the center/lfe chanel
188  * Volume is controlled by the AC97 for the front and rear channels by
189  * the PCM Playback Volume, Sigmatel Surround Playback Volume and 
190  * Surround Playback Volume. The Sigmatel 4-Speaker Stereo switch affects
191  * the front/rear channel mixing in the REAR OUT jack. When using the
192  * 4-Speaker Stereo, both front and rear channels will be mixed in the
193  * REAR OUT.
194  * The center/lfe channel has no volume control and cannot be muted during
195  * playback.
196  */
197
198 typedef struct snd_emu10k1x_voice emu10k1x_voice_t;
199 typedef struct snd_emu10k1x emu10k1x_t;
200 typedef struct snd_emu10k1x_pcm emu10k1x_pcm_t;
201
202 struct snd_emu10k1x_voice {
203         emu10k1x_t *emu;
204         int number;
205         int use;
206   
207         emu10k1x_pcm_t *epcm;
208 };
209
210 struct snd_emu10k1x_pcm {
211         emu10k1x_t *emu;
212         snd_pcm_substream_t *substream;
213         emu10k1x_voice_t *voice;
214         unsigned short running;
215 };
216
217 typedef struct {
218         struct snd_emu10k1x *emu;
219         snd_rawmidi_t *rmidi;
220         snd_rawmidi_substream_t *substream_input;
221         snd_rawmidi_substream_t *substream_output;
222         unsigned int midi_mode;
223         spinlock_t input_lock;
224         spinlock_t output_lock;
225         spinlock_t open_lock;
226         int tx_enable, rx_enable;
227         int port;
228         int ipr_tx, ipr_rx;
229         void (*interrupt)(emu10k1x_t *emu, unsigned int status);
230 } emu10k1x_midi_t;
231
232 // definition of the chip-specific record
233 struct snd_emu10k1x {
234         snd_card_t *card;
235         struct pci_dev *pci;
236
237         unsigned long port;
238         struct resource *res_port;
239         int irq;
240
241         unsigned int revision;          /* chip revision */
242         unsigned int serial;            /* serial number */
243         unsigned short model;           /* subsystem id */
244
245         spinlock_t emu_lock;
246         spinlock_t voice_lock;
247
248         ac97_t *ac97;
249         snd_pcm_t *pcm;
250
251         emu10k1x_voice_t voices[3];
252         emu10k1x_voice_t capture_voice;
253         u32 spdif_bits[3]; // SPDIF out setup
254
255         struct snd_dma_buffer dma_buffer;
256
257         emu10k1x_midi_t midi;
258 };
259
260 /* hardware definition */
261 static snd_pcm_hardware_t snd_emu10k1x_playback_hw = {
262         .info =                 (SNDRV_PCM_INFO_MMAP | 
263                                  SNDRV_PCM_INFO_INTERLEAVED |
264                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
265                                  SNDRV_PCM_INFO_MMAP_VALID),
266         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
267         .rates =                SNDRV_PCM_RATE_48000,
268         .rate_min =             48000,
269         .rate_max =             48000,
270         .channels_min =         2,
271         .channels_max =         2,
272         .buffer_bytes_max =     (32*1024),
273         .period_bytes_min =     64,
274         .period_bytes_max =     (16*1024),
275         .periods_min =          2,
276         .periods_max =          8,
277         .fifo_size =            0,
278 };
279
280 static snd_pcm_hardware_t snd_emu10k1x_capture_hw = {
281         .info =                 (SNDRV_PCM_INFO_MMAP | 
282                                  SNDRV_PCM_INFO_INTERLEAVED |
283                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
284                                  SNDRV_PCM_INFO_MMAP_VALID),
285         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
286         .rates =                SNDRV_PCM_RATE_48000,
287         .rate_min =             48000,
288         .rate_max =             48000,
289         .channels_min =         2,
290         .channels_max =         2,
291         .buffer_bytes_max =     (32*1024),
292         .period_bytes_min =     64,
293         .period_bytes_max =     (16*1024),
294         .periods_min =          2,
295         .periods_max =          2,
296         .fifo_size =            0,
297 };
298
299 static unsigned int snd_emu10k1x_ptr_read(emu10k1x_t * emu, 
300                                           unsigned int reg, 
301                                           unsigned int chn)
302 {
303         unsigned long flags;
304         unsigned int regptr, val;
305   
306         regptr = (reg << 16) | chn;
307
308         spin_lock_irqsave(&emu->emu_lock, flags);
309         outl(regptr, emu->port + PTR);
310         val = inl(emu->port + DATA);
311         spin_unlock_irqrestore(&emu->emu_lock, flags);
312         return val;
313 }
314
315 static void snd_emu10k1x_ptr_write(emu10k1x_t *emu, 
316                                    unsigned int reg, 
317                                    unsigned int chn, 
318                                    unsigned int data)
319 {
320         unsigned int regptr;
321         unsigned long flags;
322
323         regptr = (reg << 16) | chn;
324
325         spin_lock_irqsave(&emu->emu_lock, flags);
326         outl(regptr, emu->port + PTR);
327         outl(data, emu->port + DATA);
328         spin_unlock_irqrestore(&emu->emu_lock, flags);
329 }
330
331 static void snd_emu10k1x_intr_enable(emu10k1x_t *emu, unsigned int intrenb)
332 {
333         unsigned long flags;
334         unsigned int enable;
335   
336         spin_lock_irqsave(&emu->emu_lock, flags);
337         enable = inl(emu->port + INTE) | intrenb;
338         outl(enable, emu->port + INTE);
339         spin_unlock_irqrestore(&emu->emu_lock, flags);
340 }
341
342 static void snd_emu10k1x_intr_disable(emu10k1x_t *emu, unsigned int intrenb)
343 {
344         unsigned long flags;
345         unsigned int enable;
346   
347         spin_lock_irqsave(&emu->emu_lock, flags);
348         enable = inl(emu->port + INTE) & ~intrenb;
349         outl(enable, emu->port + INTE);
350         spin_unlock_irqrestore(&emu->emu_lock, flags);
351 }
352
353 static void snd_emu10k1x_gpio_write(emu10k1x_t *emu, unsigned int value)
354 {
355         unsigned long flags;
356
357         spin_lock_irqsave(&emu->emu_lock, flags);
358         outl(value, emu->port + GPIO);
359         spin_unlock_irqrestore(&emu->emu_lock, flags);
360 }
361
362 static void snd_emu10k1x_pcm_free_substream(snd_pcm_runtime_t *runtime)
363 {
364         kfree(runtime->private_data);
365 }
366
367 static void snd_emu10k1x_pcm_interrupt(emu10k1x_t *emu, emu10k1x_voice_t *voice)
368 {
369         emu10k1x_pcm_t *epcm;
370
371         if ((epcm = voice->epcm) == NULL)
372                 return;
373         if (epcm->substream == NULL)
374                 return;
375 #if 0
376         snd_printk(KERN_INFO "IRQ: position = 0x%x, period = 0x%x, size = 0x%x\n",
377                    epcm->substream->ops->pointer(epcm->substream),
378                    snd_pcm_lib_period_bytes(epcm->substream),
379                    snd_pcm_lib_buffer_bytes(epcm->substream));
380 #endif
381         snd_pcm_period_elapsed(epcm->substream);
382 }
383
384 /* open callback */
385 static int snd_emu10k1x_playback_open(snd_pcm_substream_t *substream)
386 {
387         emu10k1x_t *chip = snd_pcm_substream_chip(substream);
388         emu10k1x_pcm_t *epcm;
389         snd_pcm_runtime_t *runtime = substream->runtime;
390         int err;
391
392         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) {
393                 return err;
394         }
395         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
396                 return err;
397
398         epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
399         if (epcm == NULL)
400                 return -ENOMEM;
401         epcm->emu = chip;
402         epcm->substream = substream;
403   
404         runtime->private_data = epcm;
405         runtime->private_free = snd_emu10k1x_pcm_free_substream;
406   
407         runtime->hw = snd_emu10k1x_playback_hw;
408
409         return 0;
410 }
411
412 /* close callback */
413 static int snd_emu10k1x_playback_close(snd_pcm_substream_t *substream)
414 {
415         return 0;
416 }
417
418 /* hw_params callback */
419 static int snd_emu10k1x_pcm_hw_params(snd_pcm_substream_t *substream,
420                                       snd_pcm_hw_params_t * hw_params)
421 {
422         snd_pcm_runtime_t *runtime = substream->runtime;
423         emu10k1x_pcm_t *epcm = runtime->private_data;
424
425         if (! epcm->voice) {
426                 epcm->voice = &epcm->emu->voices[substream->pcm->device];
427                 epcm->voice->use = 1;
428                 epcm->voice->epcm = epcm;
429         }
430
431         return snd_pcm_lib_malloc_pages(substream,
432                                         params_buffer_bytes(hw_params));
433 }
434
435 /* hw_free callback */
436 static int snd_emu10k1x_pcm_hw_free(snd_pcm_substream_t *substream)
437 {
438         snd_pcm_runtime_t *runtime = substream->runtime;
439         emu10k1x_pcm_t *epcm;
440
441         if (runtime->private_data == NULL)
442                 return 0;
443         
444         epcm = runtime->private_data;
445
446         if (epcm->voice) {
447                 epcm->voice->use = 0;
448                 epcm->voice->epcm = NULL;
449                 epcm->voice = NULL;
450         }
451
452         return snd_pcm_lib_free_pages(substream);
453 }
454
455 /* prepare callback */
456 static int snd_emu10k1x_pcm_prepare(snd_pcm_substream_t *substream)
457 {
458         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
459         snd_pcm_runtime_t *runtime = substream->runtime;
460         emu10k1x_pcm_t *epcm = runtime->private_data;
461         int voice = epcm->voice->number;
462         u32 *table_base = (u32 *)(emu->dma_buffer.area+1024*voice);
463         u32 period_size_bytes = frames_to_bytes(runtime, runtime->period_size);
464         int i;
465         
466         for(i=0; i < runtime->periods; i++) {
467                 *table_base++=runtime->dma_addr+(i*period_size_bytes);
468                 *table_base++=period_size_bytes<<16;
469         }
470
471         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_ADDR, voice, emu->dma_buffer.addr+1024*voice);
472         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_SIZE, voice, (runtime->periods - 1) << 19);
473         snd_emu10k1x_ptr_write(emu, PLAYBACK_LIST_PTR, voice, 0);
474         snd_emu10k1x_ptr_write(emu, PLAYBACK_POINTER, voice, 0);
475         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN1, voice, 0);
476         snd_emu10k1x_ptr_write(emu, PLAYBACK_UNKNOWN2, voice, 0);
477         snd_emu10k1x_ptr_write(emu, PLAYBACK_DMA_ADDR, voice, runtime->dma_addr);
478
479         snd_emu10k1x_ptr_write(emu, PLAYBACK_PERIOD_SIZE, voice, frames_to_bytes(runtime, runtime->period_size)<<16);
480
481         return 0;
482 }
483
484 /* trigger callback */
485 static int snd_emu10k1x_pcm_trigger(snd_pcm_substream_t *substream,
486                                     int cmd)
487 {
488         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
489         snd_pcm_runtime_t *runtime = substream->runtime;
490         emu10k1x_pcm_t *epcm = runtime->private_data;
491         int channel = epcm->voice->number;
492         int result = 0;
493
494 //      snd_printk(KERN_INFO "trigger - emu10k1x = 0x%x, cmd = %i, pointer = %d\n", (int)emu, cmd, (int)substream->ops->pointer(substream));
495
496         switch (cmd) {
497         case SNDRV_PCM_TRIGGER_START:
498                 if(runtime->periods == 2)
499                         snd_emu10k1x_intr_enable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
500                 else
501                         snd_emu10k1x_intr_enable(emu, INTE_CH_0_LOOP << channel);
502                 epcm->running = 1;
503                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|(TRIGGER_CHANNEL_0<<channel));
504                 break;
505         case SNDRV_PCM_TRIGGER_STOP:
506                 epcm->running = 0;
507                 snd_emu10k1x_intr_disable(emu, (INTE_CH_0_LOOP | INTE_CH_0_HALF_LOOP) << channel);
508                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CHANNEL_0<<channel));
509                 break;
510         default:
511                 result = -EINVAL;
512                 break;
513         }
514         return result;
515 }
516
517 /* pointer callback */
518 static snd_pcm_uframes_t
519 snd_emu10k1x_pcm_pointer(snd_pcm_substream_t *substream)
520 {
521         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
522         snd_pcm_runtime_t *runtime = substream->runtime;
523         emu10k1x_pcm_t *epcm = runtime->private_data;
524         int channel = epcm->voice->number;
525         snd_pcm_uframes_t ptr = 0, ptr1 = 0, ptr2= 0,ptr3 = 0,ptr4 = 0;
526
527         if (!epcm->running)
528                 return 0;
529
530         ptr3 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
531         ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
532         ptr4 = snd_emu10k1x_ptr_read(emu, PLAYBACK_LIST_PTR, channel);
533
534         if(ptr4 == 0 && ptr1 == frames_to_bytes(runtime, runtime->buffer_size))
535                 return 0;
536         
537         if (ptr3 != ptr4) 
538                 ptr1 = snd_emu10k1x_ptr_read(emu, PLAYBACK_POINTER, channel);
539         ptr2 = bytes_to_frames(runtime, ptr1);
540         ptr2 += (ptr4 >> 3) * runtime->period_size;
541         ptr = ptr2;
542
543         if (ptr >= runtime->buffer_size)
544                 ptr -= runtime->buffer_size;
545
546         return ptr;
547 }
548
549 /* operators */
550 static snd_pcm_ops_t snd_emu10k1x_playback_ops = {
551         .open =        snd_emu10k1x_playback_open,
552         .close =       snd_emu10k1x_playback_close,
553         .ioctl =       snd_pcm_lib_ioctl,
554         .hw_params =   snd_emu10k1x_pcm_hw_params,
555         .hw_free =     snd_emu10k1x_pcm_hw_free,
556         .prepare =     snd_emu10k1x_pcm_prepare,
557         .trigger =     snd_emu10k1x_pcm_trigger,
558         .pointer =     snd_emu10k1x_pcm_pointer,
559 };
560
561 /* open_capture callback */
562 static int snd_emu10k1x_pcm_open_capture(snd_pcm_substream_t *substream)
563 {
564         emu10k1x_t *chip = snd_pcm_substream_chip(substream);
565         emu10k1x_pcm_t *epcm;
566         snd_pcm_runtime_t *runtime = substream->runtime;
567         int err;
568
569         if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
570                 return err;
571         if ((err = snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64)) < 0)
572                 return err;
573
574         epcm = kcalloc(1, sizeof(*epcm), GFP_KERNEL);
575         if (epcm == NULL)
576                 return -ENOMEM;
577
578         epcm->emu = chip;
579         epcm->substream = substream;
580
581         runtime->private_data = epcm;
582         runtime->private_free = snd_emu10k1x_pcm_free_substream;
583
584         runtime->hw = snd_emu10k1x_capture_hw;
585
586         return 0;
587 }
588
589 /* close callback */
590 static int snd_emu10k1x_pcm_close_capture(snd_pcm_substream_t *substream)
591 {
592         return 0;
593 }
594
595 /* hw_params callback */
596 static int snd_emu10k1x_pcm_hw_params_capture(snd_pcm_substream_t *substream,
597                                               snd_pcm_hw_params_t * hw_params)
598 {
599         snd_pcm_runtime_t *runtime = substream->runtime;
600         emu10k1x_pcm_t *epcm = runtime->private_data;
601
602         if (! epcm->voice) {
603                 if (epcm->emu->capture_voice.use)
604                         return -EBUSY;
605                 epcm->voice = &epcm->emu->capture_voice;
606                 epcm->voice->epcm = epcm;
607                 epcm->voice->use = 1;
608         }
609
610         return snd_pcm_lib_malloc_pages(substream,
611                                         params_buffer_bytes(hw_params));
612 }
613
614 /* hw_free callback */
615 static int snd_emu10k1x_pcm_hw_free_capture(snd_pcm_substream_t *substream)
616 {
617         snd_pcm_runtime_t *runtime = substream->runtime;
618
619         emu10k1x_pcm_t *epcm;
620
621         if (runtime->private_data == NULL)
622                 return 0;
623         epcm = runtime->private_data;
624
625         if (epcm->voice) {
626                 epcm->voice->use = 0;
627                 epcm->voice->epcm = NULL;
628                 epcm->voice = NULL;
629         }
630
631         return snd_pcm_lib_free_pages(substream);
632 }
633
634 /* prepare capture callback */
635 static int snd_emu10k1x_pcm_prepare_capture(snd_pcm_substream_t *substream)
636 {
637         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
638         snd_pcm_runtime_t *runtime = substream->runtime;
639
640         snd_emu10k1x_ptr_write(emu, CAPTURE_DMA_ADDR, 0, runtime->dma_addr);
641         snd_emu10k1x_ptr_write(emu, CAPTURE_BUFFER_SIZE, 0, frames_to_bytes(runtime, runtime->buffer_size)<<16); // buffer size in bytes
642         snd_emu10k1x_ptr_write(emu, CAPTURE_POINTER, 0, 0);
643         snd_emu10k1x_ptr_write(emu, CAPTURE_UNKNOWN, 0, 0);
644
645         return 0;
646 }
647
648 /* trigger_capture callback */
649 static int snd_emu10k1x_pcm_trigger_capture(snd_pcm_substream_t *substream,
650                                             int cmd)
651 {
652         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
653         snd_pcm_runtime_t *runtime = substream->runtime;
654         emu10k1x_pcm_t *epcm = runtime->private_data;
655         int result = 0;
656
657         switch (cmd) {
658         case SNDRV_PCM_TRIGGER_START:
659                 snd_emu10k1x_intr_enable(emu, INTE_CAP_0_LOOP | 
660                                          INTE_CAP_0_HALF_LOOP);
661                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0)|TRIGGER_CAPTURE);
662                 epcm->running = 1;
663                 break;
664         case SNDRV_PCM_TRIGGER_STOP:
665                 epcm->running = 0;
666                 snd_emu10k1x_intr_disable(emu, INTE_CAP_0_LOOP | 
667                                           INTE_CAP_0_HALF_LOOP);
668                 snd_emu10k1x_ptr_write(emu, TRIGGER_CHANNEL, 0, snd_emu10k1x_ptr_read(emu, TRIGGER_CHANNEL, 0) & ~(TRIGGER_CAPTURE));
669                 break;
670         default:
671                 result = -EINVAL;
672                 break;
673         }
674         return result;
675 }
676
677 /* pointer_capture callback */
678 static snd_pcm_uframes_t
679 snd_emu10k1x_pcm_pointer_capture(snd_pcm_substream_t *substream)
680 {
681         emu10k1x_t *emu = snd_pcm_substream_chip(substream);
682         snd_pcm_runtime_t *runtime = substream->runtime;
683         emu10k1x_pcm_t *epcm = runtime->private_data;
684         snd_pcm_uframes_t ptr;
685
686         if (!epcm->running)
687                 return 0;
688
689         ptr = bytes_to_frames(runtime, snd_emu10k1x_ptr_read(emu, CAPTURE_POINTER, 0));
690         if (ptr >= runtime->buffer_size)
691                 ptr -= runtime->buffer_size;
692
693         return ptr;
694 }
695
696 static snd_pcm_ops_t snd_emu10k1x_capture_ops = {
697         .open =        snd_emu10k1x_pcm_open_capture,
698         .close =       snd_emu10k1x_pcm_close_capture,
699         .ioctl =       snd_pcm_lib_ioctl,
700         .hw_params =   snd_emu10k1x_pcm_hw_params_capture,
701         .hw_free =     snd_emu10k1x_pcm_hw_free_capture,
702         .prepare =     snd_emu10k1x_pcm_prepare_capture,
703         .trigger =     snd_emu10k1x_pcm_trigger_capture,
704         .pointer =     snd_emu10k1x_pcm_pointer_capture,
705 };
706
707 static unsigned short snd_emu10k1x_ac97_read(ac97_t *ac97,
708                                              unsigned short reg)
709 {
710         emu10k1x_t *emu = ac97->private_data;
711         unsigned long flags;
712         unsigned short val;
713   
714         spin_lock_irqsave(&emu->emu_lock, flags);
715         outb(reg, emu->port + AC97ADDRESS);
716         val = inw(emu->port + AC97DATA);
717         spin_unlock_irqrestore(&emu->emu_lock, flags);
718         return val;
719 }
720
721 static void snd_emu10k1x_ac97_write(ac97_t *ac97,
722                                     unsigned short reg, unsigned short val)
723 {
724         emu10k1x_t *emu = ac97->private_data;
725         unsigned long flags;
726   
727         spin_lock_irqsave(&emu->emu_lock, flags);
728         outb(reg, emu->port + AC97ADDRESS);
729         outw(val, emu->port + AC97DATA);
730         spin_unlock_irqrestore(&emu->emu_lock, flags);
731 }
732
733 static int snd_emu10k1x_ac97(emu10k1x_t *chip)
734 {
735         ac97_bus_t *pbus;
736         ac97_template_t ac97;
737         int err;
738         static ac97_bus_ops_t ops = {
739                 .write = snd_emu10k1x_ac97_write,
740                 .read = snd_emu10k1x_ac97_read,
741         };
742   
743         if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0)
744                 return err;
745         pbus->no_vra = 1; /* we don't need VRA */
746
747         memset(&ac97, 0, sizeof(ac97));
748         ac97.private_data = chip;
749         ac97.scaps = AC97_SCAP_NO_SPDIF;
750         return snd_ac97_mixer(pbus, &ac97, &chip->ac97);
751 }
752
753 static int snd_emu10k1x_free(emu10k1x_t *chip)
754 {
755         snd_emu10k1x_ptr_write(chip, TRIGGER_CHANNEL, 0, 0);
756         // disable interrupts
757         outl(0, chip->port + INTE);
758         // disable audio
759         outl(HCFG_LOCKSOUNDCACHE, chip->port + HCFG);
760
761         // release the i/o port
762         if (chip->res_port) {
763                 release_resource(chip->res_port);
764                 kfree_nocheck(chip->res_port);
765         }
766         // release the irq
767         if (chip->irq >= 0)
768                 free_irq(chip->irq, (void *)chip);
769
770         // release the DMA
771         if (chip->dma_buffer.area) {
772                 snd_dma_free_pages(&chip->dma_buffer);
773         }
774
775         pci_disable_device(chip->pci);
776
777         // release the data
778         kfree(chip);
779         return 0;
780 }
781
782 static int snd_emu10k1x_dev_free(snd_device_t *device)
783 {
784         emu10k1x_t *chip = device->device_data;
785         return snd_emu10k1x_free(chip);
786 }
787
788 static irqreturn_t snd_emu10k1x_interrupt(int irq, void *dev_id,
789                                           struct pt_regs *regs)
790 {
791         unsigned int status;
792
793         emu10k1x_t *chip = dev_id;
794         emu10k1x_voice_t *pvoice = chip->voices;
795         int i;
796         int mask;
797
798         status = inl(chip->port + IPR);
799
800         if(status) {
801                 // capture interrupt
802                 if(status & (IPR_CAP_0_LOOP | IPR_CAP_0_HALF_LOOP)) {
803                         emu10k1x_voice_t *pvoice = &chip->capture_voice;
804                         if(pvoice->use)
805                                 snd_emu10k1x_pcm_interrupt(chip, pvoice);
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                 if(status)
833                         outl(status, chip->port+IPR);
834
835 //              snd_printk(KERN_INFO "interrupt %08x\n", status);
836         }
837
838         return IRQ_HANDLED;
839 }
840
841 static void snd_emu10k1x_pcm_free(snd_pcm_t *pcm)
842 {
843         emu10k1x_t *emu = pcm->private_data;
844         emu->pcm = NULL;
845         snd_pcm_lib_preallocate_free_for_all(pcm);
846 }
847
848 static int __devinit snd_emu10k1x_pcm(emu10k1x_t *emu, int device, snd_pcm_t **rpcm)
849 {
850         snd_pcm_t *pcm;
851         int err;
852         int capture = 0;
853   
854         if (rpcm)
855                 *rpcm = NULL;
856         if (device == 0)
857                 capture = 1;
858         
859         if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
860                 return err;
861   
862         pcm->private_data = emu;
863         pcm->private_free = snd_emu10k1x_pcm_free;
864         
865         switch(device) {
866         case 0:
867                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
868                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_emu10k1x_capture_ops);
869                 break;
870         case 1:
871         case 2:
872                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_emu10k1x_playback_ops);
873                 break;
874         }
875
876         pcm->info_flags = 0;
877         pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
878         switch(device) {
879         case 0:
880                 strcpy(pcm->name, "EMU10K1X Front");
881                 break;
882         case 1:
883                 strcpy(pcm->name, "EMU10K1X Rear");
884                 break;
885         case 2:
886                 strcpy(pcm->name, "EMU10K1X Center/LFE");
887                 break;
888         }
889         emu->pcm = pcm;
890
891         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
892                                               snd_dma_pci_data(emu->pci), 
893                                               32*1024, 32*1024);
894   
895         if (rpcm)
896                 *rpcm = pcm;
897   
898         return 0;
899 }
900
901 static int __devinit snd_emu10k1x_create(snd_card_t *card,
902                                          struct pci_dev *pci,
903                                          emu10k1x_t **rchip)
904 {
905         emu10k1x_t *chip;
906         int err;
907         int ch;
908         static snd_device_ops_t ops = {
909                 .dev_free = snd_emu10k1x_dev_free,
910         };
911   
912         *rchip = NULL;
913   
914         if ((err = pci_enable_device(pci)) < 0)
915                 return err;
916         if (pci_set_dma_mask(pci, 0x0fffffff) < 0 ||
917             pci_set_consistent_dma_mask(pci, 0x0fffffff) < 0) {
918                 snd_printk(KERN_ERR "error to set 28bit mask DMA\n");
919                 pci_disable_device(pci);
920                 return -ENXIO;
921         }
922   
923         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
924         if (chip == NULL) {
925                 pci_disable_device(pci);
926                 return -ENOMEM;
927         }
928   
929         chip->card = card;
930         chip->pci = pci;
931         chip->irq = -1;
932
933         spin_lock_init(&chip->emu_lock);
934         spin_lock_init(&chip->voice_lock);
935   
936         chip->port = pci_resource_start(pci, 0);
937         if ((chip->res_port = request_region(chip->port, 8,
938                                              "EMU10K1X")) == NULL) { 
939                 snd_printk(KERN_ERR "emu10k1x: cannot allocate the port 0x%lx\n", chip->port);
940                 snd_emu10k1x_free(chip);
941                 return -EBUSY;
942         }
943
944         if (request_irq(pci->irq, snd_emu10k1x_interrupt,
945                         SA_INTERRUPT|SA_SHIRQ, "EMU10K1X",
946                         (void *)chip)) {
947                 snd_printk(KERN_ERR "emu10k1x: cannot grab irq %d\n", pci->irq);
948                 snd_emu10k1x_free(chip);
949                 return -EBUSY;
950         }
951         chip->irq = pci->irq;
952   
953         if(snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
954                                4 * 1024, &chip->dma_buffer) < 0) {
955                 snd_emu10k1x_free(chip);
956                 return -ENOMEM;
957         }
958
959         pci_set_master(pci);
960         /* read revision & serial */
961         pci_read_config_byte(pci, PCI_REVISION_ID, (char *)&chip->revision);
962         pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
963         pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
964         snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
965                    chip->revision, chip->serial);
966
967         outl(0, chip->port + INTE);     
968
969         for(ch = 0; ch < 3; ch++) {
970                 chip->voices[ch].emu = chip;
971                 chip->voices[ch].number = ch;
972         }
973
974         /*
975          *  Init to 0x02109204 :
976          *  Clock accuracy    = 0     (1000ppm)
977          *  Sample Rate       = 2     (48kHz)
978          *  Audio Channel     = 1     (Left of 2)
979          *  Source Number     = 0     (Unspecified)
980          *  Generation Status = 1     (Original for Cat Code 12)
981          *  Cat Code          = 12    (Digital Signal Mixer)
982          *  Mode              = 0     (Mode 0)
983          *  Emphasis          = 0     (None)
984          *  CP                = 1     (Copyright unasserted)
985          *  AN                = 0     (Audio data)
986          *  P                 = 0     (Consumer)
987          */
988         snd_emu10k1x_ptr_write(chip, SPCS0, 0,
989                                chip->spdif_bits[0] = 
990                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
991                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
992                                SPCS_GENERATIONSTATUS | 0x00001200 |
993                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
994         snd_emu10k1x_ptr_write(chip, SPCS1, 0,
995                                chip->spdif_bits[1] = 
996                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
997                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
998                                SPCS_GENERATIONSTATUS | 0x00001200 |
999                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1000         snd_emu10k1x_ptr_write(chip, SPCS2, 0,
1001                                chip->spdif_bits[2] = 
1002                                SPCS_CLKACCY_1000PPM | SPCS_SAMPLERATE_48 |
1003                                SPCS_CHANNELNUM_LEFT | SPCS_SOURCENUM_UNSPEC |
1004                                SPCS_GENERATIONSTATUS | 0x00001200 |
1005                                0x00000000 | SPCS_EMPHASIS_NONE | SPCS_COPYRIGHT);
1006
1007         snd_emu10k1x_ptr_write(chip, SPDIF_SELECT, 0, 0x700); // disable SPDIF
1008         snd_emu10k1x_ptr_write(chip, ROUTING, 0, 0x1003F); // routing
1009         snd_emu10k1x_gpio_write(chip, 0x1080); // analog mode
1010
1011         outl(HCFG_LOCKSOUNDCACHE|HCFG_AUDIOENABLE, chip->port+HCFG);
1012
1013         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1014                                   chip, &ops)) < 0) {
1015                 snd_emu10k1x_free(chip);
1016                 return err;
1017         }
1018         *rchip = chip;
1019         return 0;
1020 }
1021
1022 static void snd_emu10k1x_proc_reg_read(snd_info_entry_t *entry, 
1023                                        snd_info_buffer_t * buffer)
1024 {
1025         emu10k1x_t *emu = entry->private_data;
1026         unsigned long value,value1,value2;
1027         unsigned long flags;
1028         int i;
1029
1030         snd_iprintf(buffer, "Registers:\n\n");
1031         for(i = 0; i < 0x20; i+=4) {
1032                 spin_lock_irqsave(&emu->emu_lock, flags);
1033                 value = inl(emu->port + i);
1034                 spin_unlock_irqrestore(&emu->emu_lock, flags);
1035                 snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
1036         }
1037         snd_iprintf(buffer, "\nRegisters\n\n");
1038         for(i = 0; i <= 0x48; i++) {
1039                 value = snd_emu10k1x_ptr_read(emu, i, 0);
1040                 if(i < 0x10 || (i >= 0x20 && i < 0x40)) {
1041                         value1 = snd_emu10k1x_ptr_read(emu, i, 1);
1042                         value2 = snd_emu10k1x_ptr_read(emu, i, 2);
1043                         snd_iprintf(buffer, "%02X: %08lX %08lX %08lX\n", i, value, value1, value2);
1044                 } else {
1045                         snd_iprintf(buffer, "%02X: %08lX\n", i, value);
1046                 }
1047         }
1048 }
1049
1050 static void snd_emu10k1x_proc_reg_write(snd_info_entry_t *entry, 
1051                                         snd_info_buffer_t *buffer)
1052 {
1053         emu10k1x_t *emu = entry->private_data;
1054         char line[64];
1055         unsigned int reg, channel_id , val;
1056
1057         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1058                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
1059                         continue;
1060
1061                 if ((reg < 0x49) && (reg >=0) && (val <= 0xffffffff) 
1062                     && (channel_id >=0) && (channel_id <= 2) )
1063                         snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1064         }
1065 }
1066
1067 static int __devinit snd_emu10k1x_proc_init(emu10k1x_t * emu)
1068 {
1069         snd_info_entry_t *entry;
1070         
1071         if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1072                 snd_info_set_text_ops(entry, emu, 1024, snd_emu10k1x_proc_reg_read);
1073                 entry->c.text.write_size = 64;
1074                 entry->c.text.write = snd_emu10k1x_proc_reg_write;
1075                 entry->mode |= S_IWUSR;
1076                 entry->private_data = emu;
1077         }
1078         
1079         return 0;
1080 }
1081
1082 static int snd_emu10k1x_shared_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
1083 {
1084         uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1085         uinfo->count = 1;
1086         uinfo->value.integer.min = 0;
1087         uinfo->value.integer.max = 1;
1088         return 0;
1089 }
1090
1091 static int snd_emu10k1x_shared_spdif_get(snd_kcontrol_t * kcontrol,
1092                                          snd_ctl_elem_value_t * ucontrol)
1093 {
1094         emu10k1x_t *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(snd_kcontrol_t * kcontrol,
1102                                          snd_ctl_elem_value_t * ucontrol)
1103 {
1104         emu10k1x_t *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 snd_kcontrol_new_t snd_emu10k1x_shared_spdif __devinitdata =
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(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * 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(snd_kcontrol_t * kcontrol,
1141                                   snd_ctl_elem_value_t * ucontrol)
1142 {
1143         emu10k1x_t *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(snd_kcontrol_t * kcontrol,
1154                                        snd_ctl_elem_value_t * 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(snd_kcontrol_t * kcontrol,
1164                                   snd_ctl_elem_value_t * ucontrol)
1165 {
1166         emu10k1x_t *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 snd_kcontrol_new_t snd_emu10k1x_spdif_mask_control =
1184 {
1185         .access =       SNDRV_CTL_ELEM_ACCESS_READ,
1186         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
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 snd_kcontrol_new_t snd_emu10k1x_spdif_control =
1194 {
1195         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
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 __devinit snd_emu10k1x_mixer(emu10k1x_t *emu)
1204 {
1205         int err;
1206         snd_kcontrol_t *kctl;
1207         snd_card_t *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(emu10k1x_t *emu, emu10k1x_midi_t *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(emu10k1x_t *emu, emu10k1x_midi_t *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(emu10k1x_t *emu, emu10k1x_midi_t *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                 snd_printk(KERN_ERR "cmd: clear rx timeout (status = 0x%x)\n", mpu401_read_stat(emu, mpu));
1258 #endif
1259 }
1260
1261 /*
1262
1263  */
1264
1265 static void do_emu10k1x_midi_interrupt(emu10k1x_t *emu, emu10k1x_midi_t *midi, unsigned int status)
1266 {
1267         unsigned char byte;
1268
1269         if (midi->rmidi == NULL) {
1270                 snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1271                 return;
1272         }
1273
1274         spin_lock(&midi->input_lock);
1275         if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1276                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1277                         mpu401_clear_rx(emu, midi);
1278                 } else {
1279                         byte = mpu401_read_data(emu, midi);
1280                         if (midi->substream_input)
1281                                 snd_rawmidi_receive(midi->substream_input, &byte, 1);
1282                 }
1283         }
1284         spin_unlock(&midi->input_lock);
1285
1286         spin_lock(&midi->output_lock);
1287         if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1288                 if (midi->substream_output &&
1289                     snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1290                         mpu401_write_data(emu, midi, byte);
1291                 } else {
1292                         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1293                 }
1294         }
1295         spin_unlock(&midi->output_lock);
1296 }
1297
1298 static void snd_emu10k1x_midi_interrupt(emu10k1x_t *emu, unsigned int status)
1299 {
1300         do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1301 }
1302
1303 static void snd_emu10k1x_midi_cmd(emu10k1x_t * emu, emu10k1x_midi_t *midi, unsigned char cmd, int ack)
1304 {
1305         unsigned long flags;
1306         int timeout, ok;
1307
1308         spin_lock_irqsave(&midi->input_lock, flags);
1309         mpu401_write_data(emu, midi, 0x00);
1310         /* mpu401_clear_rx(emu, midi); */
1311
1312         mpu401_write_cmd(emu, midi, cmd);
1313         if (ack) {
1314                 ok = 0;
1315                 timeout = 10000;
1316                 while (!ok && timeout-- > 0) {
1317                         if (mpu401_input_avail(emu, midi)) {
1318                                 if (mpu401_read_data(emu, midi) == MPU401_ACK)
1319                                         ok = 1;
1320                         }
1321                 }
1322                 if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1323                         ok = 1;
1324         } else {
1325                 ok = 1;
1326         }
1327         spin_unlock_irqrestore(&midi->input_lock, flags);
1328         if (!ok)
1329                 snd_printk(KERN_ERR "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1330                            cmd, emu->port,
1331                            mpu401_read_stat(emu, midi),
1332                            mpu401_read_data(emu, midi));
1333 }
1334
1335 static int snd_emu10k1x_midi_input_open(snd_rawmidi_substream_t * substream)
1336 {
1337         emu10k1x_t *emu;
1338         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1339         unsigned long flags;
1340         
1341         emu = midi->emu;
1342         snd_assert(emu, 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                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1);
1349                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1);
1350         } else {
1351                 spin_unlock_irqrestore(&midi->open_lock, flags);
1352         }
1353         return 0;
1354 }
1355
1356 static int snd_emu10k1x_midi_output_open(snd_rawmidi_substream_t * substream)
1357 {
1358         emu10k1x_t *emu;
1359         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1360         unsigned long flags;
1361
1362         emu = midi->emu;
1363         snd_assert(emu, return -ENXIO);
1364         spin_lock_irqsave(&midi->open_lock, flags);
1365         midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1366         midi->substream_output = substream;
1367         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1368                 spin_unlock_irqrestore(&midi->open_lock, flags);
1369                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1);
1370                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1);
1371         } else {
1372                 spin_unlock_irqrestore(&midi->open_lock, flags);
1373         }
1374         return 0;
1375 }
1376
1377 static int snd_emu10k1x_midi_input_close(snd_rawmidi_substream_t * substream)
1378 {
1379         emu10k1x_t *emu;
1380         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1381         unsigned long flags;
1382
1383         emu = midi->emu;
1384         snd_assert(emu, return -ENXIO);
1385         spin_lock_irqsave(&midi->open_lock, flags);
1386         snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1387         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1388         midi->substream_input = NULL;
1389         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1390                 spin_unlock_irqrestore(&midi->open_lock, flags);
1391                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1392         } else {
1393                 spin_unlock_irqrestore(&midi->open_lock, flags);
1394         }
1395         return 0;
1396 }
1397
1398 static int snd_emu10k1x_midi_output_close(snd_rawmidi_substream_t * substream)
1399 {
1400         emu10k1x_t *emu;
1401         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1402         unsigned long flags;
1403
1404         emu = midi->emu;
1405         snd_assert(emu, return -ENXIO);
1406         spin_lock_irqsave(&midi->open_lock, flags);
1407         snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1408         midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1409         midi->substream_output = NULL;
1410         if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1411                 spin_unlock_irqrestore(&midi->open_lock, flags);
1412                 snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1413         } else {
1414                 spin_unlock_irqrestore(&midi->open_lock, flags);
1415         }
1416         return 0;
1417 }
1418
1419 static void snd_emu10k1x_midi_input_trigger(snd_rawmidi_substream_t * substream, int up)
1420 {
1421         emu10k1x_t *emu;
1422         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1423         emu = midi->emu;
1424         snd_assert(emu, return);
1425
1426         if (up)
1427                 snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1428         else
1429                 snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1430 }
1431
1432 static void snd_emu10k1x_midi_output_trigger(snd_rawmidi_substream_t * substream, int up)
1433 {
1434         emu10k1x_t *emu;
1435         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)substream->rmidi->private_data;
1436         unsigned long flags;
1437
1438         emu = midi->emu;
1439         snd_assert(emu, return);
1440
1441         if (up) {
1442                 int max = 4;
1443                 unsigned char byte;
1444         
1445                 /* try to send some amount of bytes here before interrupts */
1446                 spin_lock_irqsave(&midi->output_lock, flags);
1447                 while (max > 0) {
1448                         if (mpu401_output_ready(emu, midi)) {
1449                                 if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1450                                     snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1451                                         /* no more data */
1452                                         spin_unlock_irqrestore(&midi->output_lock, flags);
1453                                         return;
1454                                 }
1455                                 mpu401_write_data(emu, midi, byte);
1456                                 max--;
1457                         } else {
1458                                 break;
1459                         }
1460                 }
1461                 spin_unlock_irqrestore(&midi->output_lock, flags);
1462                 snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1463         } else {
1464                 snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1465         }
1466 }
1467
1468 /*
1469
1470  */
1471
1472 static snd_rawmidi_ops_t snd_emu10k1x_midi_output =
1473 {
1474         .open =         snd_emu10k1x_midi_output_open,
1475         .close =        snd_emu10k1x_midi_output_close,
1476         .trigger =      snd_emu10k1x_midi_output_trigger,
1477 };
1478
1479 static snd_rawmidi_ops_t snd_emu10k1x_midi_input =
1480 {
1481         .open =         snd_emu10k1x_midi_input_open,
1482         .close =        snd_emu10k1x_midi_input_close,
1483         .trigger =      snd_emu10k1x_midi_input_trigger,
1484 };
1485
1486 static void snd_emu10k1x_midi_free(snd_rawmidi_t *rmidi)
1487 {
1488         emu10k1x_midi_t *midi = (emu10k1x_midi_t *)rmidi->private_data;
1489         midi->interrupt = NULL;
1490         midi->rmidi = NULL;
1491 }
1492
1493 static int __devinit emu10k1x_midi_init(emu10k1x_t *emu, emu10k1x_midi_t *midi, int device, char *name)
1494 {
1495         snd_rawmidi_t *rmidi;
1496         int err;
1497
1498         if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1499                 return err;
1500         midi->emu = emu;
1501         spin_lock_init(&midi->open_lock);
1502         spin_lock_init(&midi->input_lock);
1503         spin_lock_init(&midi->output_lock);
1504         strcpy(rmidi->name, name);
1505         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1506         snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1507         rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1508                              SNDRV_RAWMIDI_INFO_INPUT |
1509                              SNDRV_RAWMIDI_INFO_DUPLEX;
1510         rmidi->private_data = midi;
1511         rmidi->private_free = snd_emu10k1x_midi_free;
1512         midi->rmidi = rmidi;
1513         return 0;
1514 }
1515
1516 static int __devinit snd_emu10k1x_midi(emu10k1x_t *emu)
1517 {
1518         emu10k1x_midi_t *midi = &emu->midi;
1519         int err;
1520
1521         if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1522                 return err;
1523
1524         midi->tx_enable = INTE_MIDITXENABLE;
1525         midi->rx_enable = INTE_MIDIRXENABLE;
1526         midi->port = MUDATA;
1527         midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1528         midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1529         midi->interrupt = snd_emu10k1x_midi_interrupt;
1530         return 0;
1531 }
1532
1533 static int __devinit snd_emu10k1x_probe(struct pci_dev *pci,
1534                                         const struct pci_device_id *pci_id)
1535 {
1536         static int dev;
1537         snd_card_t *card;
1538         emu10k1x_t *chip;
1539         int err;
1540
1541         if (dev >= SNDRV_CARDS)
1542                 return -ENODEV;
1543         if (!enable[dev]) {
1544                 dev++;
1545                 return -ENOENT;
1546         }
1547
1548         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1549         if (card == NULL)
1550                 return -ENOMEM;
1551
1552         if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1553                 snd_card_free(card);
1554                 return err;
1555         }
1556
1557         if ((err = snd_emu10k1x_pcm(chip, 0, NULL)) < 0) {
1558                 snd_card_free(card);
1559                 return err;
1560         }
1561         if ((err = snd_emu10k1x_pcm(chip, 1, NULL)) < 0) {
1562                 snd_card_free(card);
1563                 return err;
1564         }
1565         if ((err = snd_emu10k1x_pcm(chip, 2, NULL)) < 0) {
1566                 snd_card_free(card);
1567                 return err;
1568         }
1569
1570         if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1571                 snd_card_free(card);
1572                 return err;
1573         }
1574
1575         if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1576                 snd_card_free(card);
1577                 return err;
1578         }
1579         
1580         if ((err = snd_emu10k1x_midi(chip)) < 0) {
1581                 snd_card_free(card);
1582                 return err;
1583         }
1584
1585         snd_emu10k1x_proc_init(chip);
1586
1587         strcpy(card->driver, "EMU10K1X");
1588         strcpy(card->shortname, "Dell Sound Blaster Live!");
1589         sprintf(card->longname, "%s at 0x%lx irq %i",
1590                 card->shortname, chip->port, chip->irq);
1591
1592         if ((err = snd_card_register(card)) < 0) {
1593                 snd_card_free(card);
1594                 return err;
1595         }
1596
1597         pci_set_drvdata(pci, card);
1598         dev++;
1599         return 0;
1600 }
1601
1602 static void __devexit snd_emu10k1x_remove(struct pci_dev *pci)
1603 {
1604         snd_card_free(pci_get_drvdata(pci));
1605         pci_set_drvdata(pci, NULL);
1606 }
1607
1608 // PCI IDs
1609 static struct pci_device_id snd_emu10k1x_ids[] = {
1610         { 0x1102, 0x0006, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },    /* Dell OEM version (EMU10K1) */
1611         { 0, }
1612 };
1613 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1614
1615 // pci_driver definition
1616 static struct pci_driver driver = {
1617         .name = "EMU10K1X",
1618         .id_table = snd_emu10k1x_ids,
1619         .probe = snd_emu10k1x_probe,
1620         .remove = __devexit_p(snd_emu10k1x_remove),
1621 };
1622
1623 // initialization of the module
1624 static int __init alsa_card_emu10k1x_init(void)
1625 {
1626         int err;
1627
1628         if ((err = pci_register_driver(&driver)) > 0)
1629                 return err;
1630
1631         return 0;
1632 }
1633
1634 // clean up the module
1635 static void __exit alsa_card_emu10k1x_exit(void)
1636 {
1637         pci_unregister_driver(&driver);
1638 }
1639
1640 module_init(alsa_card_emu10k1x_init)
1641 module_exit(alsa_card_emu10k1x_exit)