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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 
snd_emu10k1x_ptr_read(struct emu10k1x * emu,unsigned int reg,unsigned int chn)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 
snd_emu10k1x_ptr_write(struct emu10k1x * emu,unsigned int reg,unsigned int chn,unsigned int data)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 
snd_emu10k1x_intr_enable(struct emu10k1x * emu,unsigned int intrenb)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 
snd_emu10k1x_intr_disable(struct emu10k1x * emu,unsigned int intrenb)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 
snd_emu10k1x_gpio_write(struct emu10k1x * emu,unsigned int value)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 
snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime * runtime)358 static void snd_emu10k1x_pcm_free_substream(struct snd_pcm_runtime *runtime)
359 {
360 	kfree(runtime->private_data);
361 }
362 
snd_emu10k1x_pcm_interrupt(struct emu10k1x * emu,struct emu10k1x_voice * voice)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 */
snd_emu10k1x_playback_open(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_playback_close(struct snd_pcm_substream * substream)410 static int snd_emu10k1x_playback_close(struct snd_pcm_substream *substream)
411 {
412 	return 0;
413 }
414 
415 /* hw_params callback */
snd_emu10k1x_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)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 */
snd_emu10k1x_pcm_hw_free(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_pcm_prepare(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_pcm_trigger(struct snd_pcm_substream * substream,int cmd)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
snd_emu10k1x_pcm_pointer(struct snd_pcm_substream * substream)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 const 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 */
snd_emu10k1x_pcm_open_capture(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream * substream)591 static int snd_emu10k1x_pcm_close_capture(struct snd_pcm_substream *substream)
592 {
593 	return 0;
594 }
595 
596 /* hw_params callback */
snd_emu10k1x_pcm_hw_params_capture(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)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 */
snd_emu10k1x_pcm_hw_free_capture(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_pcm_prepare_capture(struct snd_pcm_substream * substream)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 */
snd_emu10k1x_pcm_trigger_capture(struct snd_pcm_substream * substream,int cmd)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
snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream * substream)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 const 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 
snd_emu10k1x_ac97_read(struct snd_ac97 * ac97,unsigned short reg)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 
snd_emu10k1x_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)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 
snd_emu10k1x_ac97(struct emu10k1x * chip)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 
snd_emu10k1x_free(struct emu10k1x * chip)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 
snd_emu10k1x_dev_free(struct snd_device * device)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 
snd_emu10k1x_interrupt(int irq,void * dev_id)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 
snd_emu10k1x_pcm(struct emu10k1x * emu,int device)850 static int snd_emu10k1x_pcm(struct emu10k1x *emu, int device)
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 (device == 0)
858 		capture = 1;
859 
860 	if ((err = snd_pcm_new(emu->card, "emu10k1x", device, 1, capture, &pcm)) < 0)
861 		return err;
862 
863 	pcm->private_data = emu;
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 	switch(device) {
878 	case 0:
879 		strcpy(pcm->name, "EMU10K1X Front");
880 		map = snd_pcm_std_chmaps;
881 		break;
882 	case 1:
883 		strcpy(pcm->name, "EMU10K1X Rear");
884 		map = surround_map;
885 		break;
886 	case 2:
887 		strcpy(pcm->name, "EMU10K1X Center/LFE");
888 		map = clfe_map;
889 		break;
890 	}
891 	emu->pcm = pcm;
892 
893 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
894 					      snd_dma_pci_data(emu->pci),
895 					      32*1024, 32*1024);
896 
897 	return snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, 2,
898 				     1 << 2, NULL);
899 }
900 
snd_emu10k1x_create(struct snd_card * card,struct pci_dev * pci,struct emu10k1x ** rchip)901 static int snd_emu10k1x_create(struct snd_card *card,
902 			       struct pci_dev *pci,
903 			       struct emu10k1x **rchip)
904 {
905 	struct emu10k1x *chip;
906 	int err;
907 	int ch;
908 	static struct snd_device_ops 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, DMA_BIT_MASK(28)) < 0 ||
917 	    pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
918 		dev_err(card->dev, "error to set 28bit mask DMA\n");
919 		pci_disable_device(pci);
920 		return -ENXIO;
921 	}
922 
923 	chip = kzalloc(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 		dev_err(card->dev, "cannot allocate the port 0x%lx\n",
940 			chip->port);
941 		snd_emu10k1x_free(chip);
942 		return -EBUSY;
943 	}
944 
945 	if (request_irq(pci->irq, snd_emu10k1x_interrupt,
946 			IRQF_SHARED, KBUILD_MODNAME, chip)) {
947 		dev_err(card->dev, "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 	chip->revision = pci->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 	dev_info(card->dev, "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 
snd_emu10k1x_proc_reg_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1022 static void snd_emu10k1x_proc_reg_read(struct snd_info_entry *entry,
1023 				       struct snd_info_buffer *buffer)
1024 {
1025 	struct emu10k1x *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 
snd_emu10k1x_proc_reg_write(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1050 static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
1051 					struct snd_info_buffer *buffer)
1052 {
1053 	struct emu10k1x *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 && val <= 0xffffffff && channel_id <= 2)
1062 			snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
1063 	}
1064 }
1065 
snd_emu10k1x_proc_init(struct emu10k1x * emu)1066 static int snd_emu10k1x_proc_init(struct emu10k1x *emu)
1067 {
1068 	struct snd_info_entry *entry;
1069 
1070 	if(! snd_card_proc_new(emu->card, "emu10k1x_regs", &entry)) {
1071 		snd_info_set_text_ops(entry, emu, snd_emu10k1x_proc_reg_read);
1072 		entry->c.text.write = snd_emu10k1x_proc_reg_write;
1073 		entry->mode |= S_IWUSR;
1074 		entry->private_data = emu;
1075 	}
1076 
1077 	return 0;
1078 }
1079 
1080 #define snd_emu10k1x_shared_spdif_info	snd_ctl_boolean_mono_info
1081 
snd_emu10k1x_shared_spdif_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1082 static int snd_emu10k1x_shared_spdif_get(struct snd_kcontrol *kcontrol,
1083 					 struct snd_ctl_elem_value *ucontrol)
1084 {
1085 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1086 
1087 	ucontrol->value.integer.value[0] = (snd_emu10k1x_ptr_read(emu, SPDIF_SELECT, 0) == 0x700) ? 0 : 1;
1088 
1089 	return 0;
1090 }
1091 
snd_emu10k1x_shared_spdif_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1092 static int snd_emu10k1x_shared_spdif_put(struct snd_kcontrol *kcontrol,
1093 					 struct snd_ctl_elem_value *ucontrol)
1094 {
1095 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1096 	unsigned int val;
1097 	int change = 0;
1098 
1099 	val = ucontrol->value.integer.value[0] ;
1100 
1101 	if (val) {
1102 		// enable spdif output
1103 		snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x000);
1104 		snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x700);
1105 		snd_emu10k1x_gpio_write(emu, 0x1000);
1106 	} else {
1107 		// disable spdif output
1108 		snd_emu10k1x_ptr_write(emu, SPDIF_SELECT, 0, 0x700);
1109 		snd_emu10k1x_ptr_write(emu, ROUTING, 0, 0x1003F);
1110 		snd_emu10k1x_gpio_write(emu, 0x1080);
1111 	}
1112 	return change;
1113 }
1114 
1115 static struct snd_kcontrol_new snd_emu10k1x_shared_spdif =
1116 {
1117 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
1118 	.name =		"Analog/Digital Output Jack",
1119 	.info =		snd_emu10k1x_shared_spdif_info,
1120 	.get =		snd_emu10k1x_shared_spdif_get,
1121 	.put =		snd_emu10k1x_shared_spdif_put
1122 };
1123 
snd_emu10k1x_spdif_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1124 static int snd_emu10k1x_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1125 {
1126 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
1127 	uinfo->count = 1;
1128 	return 0;
1129 }
1130 
snd_emu10k1x_spdif_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1131 static int snd_emu10k1x_spdif_get(struct snd_kcontrol *kcontrol,
1132 				  struct snd_ctl_elem_value *ucontrol)
1133 {
1134 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1135 	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1136 
1137 	ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
1138 	ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
1139 	ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
1140 	ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
1141 	return 0;
1142 }
1143 
snd_emu10k1x_spdif_get_mask(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1144 static int snd_emu10k1x_spdif_get_mask(struct snd_kcontrol *kcontrol,
1145 				       struct snd_ctl_elem_value *ucontrol)
1146 {
1147 	ucontrol->value.iec958.status[0] = 0xff;
1148 	ucontrol->value.iec958.status[1] = 0xff;
1149 	ucontrol->value.iec958.status[2] = 0xff;
1150 	ucontrol->value.iec958.status[3] = 0xff;
1151 	return 0;
1152 }
1153 
snd_emu10k1x_spdif_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1154 static int snd_emu10k1x_spdif_put(struct snd_kcontrol *kcontrol,
1155 				  struct snd_ctl_elem_value *ucontrol)
1156 {
1157 	struct emu10k1x *emu = snd_kcontrol_chip(kcontrol);
1158 	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
1159 	int change;
1160 	unsigned int val;
1161 
1162 	val = (ucontrol->value.iec958.status[0] << 0) |
1163 		(ucontrol->value.iec958.status[1] << 8) |
1164 		(ucontrol->value.iec958.status[2] << 16) |
1165 		(ucontrol->value.iec958.status[3] << 24);
1166 	change = val != emu->spdif_bits[idx];
1167 	if (change) {
1168 		snd_emu10k1x_ptr_write(emu, SPCS0 + idx, 0, val);
1169 		emu->spdif_bits[idx] = val;
1170 	}
1171 	return change;
1172 }
1173 
1174 static struct snd_kcontrol_new snd_emu10k1x_spdif_mask_control =
1175 {
1176 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1177 	.iface =        SNDRV_CTL_ELEM_IFACE_PCM,
1178 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
1179 	.count =	3,
1180 	.info =         snd_emu10k1x_spdif_info,
1181 	.get =          snd_emu10k1x_spdif_get_mask
1182 };
1183 
1184 static struct snd_kcontrol_new snd_emu10k1x_spdif_control =
1185 {
1186 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1187 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1188 	.count =	3,
1189 	.info =         snd_emu10k1x_spdif_info,
1190 	.get =          snd_emu10k1x_spdif_get,
1191 	.put =          snd_emu10k1x_spdif_put
1192 };
1193 
snd_emu10k1x_mixer(struct emu10k1x * emu)1194 static int snd_emu10k1x_mixer(struct emu10k1x *emu)
1195 {
1196 	int err;
1197 	struct snd_kcontrol *kctl;
1198 	struct snd_card *card = emu->card;
1199 
1200 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_mask_control, emu)) == NULL)
1201 		return -ENOMEM;
1202 	if ((err = snd_ctl_add(card, kctl)))
1203 		return err;
1204 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_shared_spdif, emu)) == NULL)
1205 		return -ENOMEM;
1206 	if ((err = snd_ctl_add(card, kctl)))
1207 		return err;
1208 	if ((kctl = snd_ctl_new1(&snd_emu10k1x_spdif_control, emu)) == NULL)
1209 		return -ENOMEM;
1210 	if ((err = snd_ctl_add(card, kctl)))
1211 		return err;
1212 
1213 	return 0;
1214 }
1215 
1216 #define EMU10K1X_MIDI_MODE_INPUT	(1<<0)
1217 #define EMU10K1X_MIDI_MODE_OUTPUT	(1<<1)
1218 
mpu401_read(struct emu10k1x * emu,struct emu10k1x_midi * mpu,int idx)1219 static inline unsigned char mpu401_read(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int idx)
1220 {
1221 	return (unsigned char)snd_emu10k1x_ptr_read(emu, mpu->port + idx, 0);
1222 }
1223 
mpu401_write(struct emu10k1x * emu,struct emu10k1x_midi * mpu,int data,int idx)1224 static inline void mpu401_write(struct emu10k1x *emu, struct emu10k1x_midi *mpu, int data, int idx)
1225 {
1226 	snd_emu10k1x_ptr_write(emu, mpu->port + idx, 0, data);
1227 }
1228 
1229 #define mpu401_write_data(emu, mpu, data)	mpu401_write(emu, mpu, data, 0)
1230 #define mpu401_write_cmd(emu, mpu, data)	mpu401_write(emu, mpu, data, 1)
1231 #define mpu401_read_data(emu, mpu)		mpu401_read(emu, mpu, 0)
1232 #define mpu401_read_stat(emu, mpu)		mpu401_read(emu, mpu, 1)
1233 
1234 #define mpu401_input_avail(emu,mpu)	(!(mpu401_read_stat(emu,mpu) & 0x80))
1235 #define mpu401_output_ready(emu,mpu)	(!(mpu401_read_stat(emu,mpu) & 0x40))
1236 
1237 #define MPU401_RESET		0xff
1238 #define MPU401_ENTER_UART	0x3f
1239 #define MPU401_ACK		0xfe
1240 
mpu401_clear_rx(struct emu10k1x * emu,struct emu10k1x_midi * mpu)1241 static void mpu401_clear_rx(struct emu10k1x *emu, struct emu10k1x_midi *mpu)
1242 {
1243 	int timeout = 100000;
1244 	for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--)
1245 		mpu401_read_data(emu, mpu);
1246 #ifdef CONFIG_SND_DEBUG
1247 	if (timeout <= 0)
1248 		dev_err(emu->card->dev,
1249 			"cmd: clear rx timeout (status = 0x%x)\n",
1250 			mpu401_read_stat(emu, mpu));
1251 #endif
1252 }
1253 
1254 /*
1255 
1256  */
1257 
do_emu10k1x_midi_interrupt(struct emu10k1x * emu,struct emu10k1x_midi * midi,unsigned int status)1258 static void do_emu10k1x_midi_interrupt(struct emu10k1x *emu,
1259 				       struct emu10k1x_midi *midi, unsigned int status)
1260 {
1261 	unsigned char byte;
1262 
1263 	if (midi->rmidi == NULL) {
1264 		snd_emu10k1x_intr_disable(emu, midi->tx_enable | midi->rx_enable);
1265 		return;
1266 	}
1267 
1268 	spin_lock(&midi->input_lock);
1269 	if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) {
1270 		if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1271 			mpu401_clear_rx(emu, midi);
1272 		} else {
1273 			byte = mpu401_read_data(emu, midi);
1274 			if (midi->substream_input)
1275 				snd_rawmidi_receive(midi->substream_input, &byte, 1);
1276 		}
1277 	}
1278 	spin_unlock(&midi->input_lock);
1279 
1280 	spin_lock(&midi->output_lock);
1281 	if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) {
1282 		if (midi->substream_output &&
1283 		    snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) {
1284 			mpu401_write_data(emu, midi, byte);
1285 		} else {
1286 			snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1287 		}
1288 	}
1289 	spin_unlock(&midi->output_lock);
1290 }
1291 
snd_emu10k1x_midi_interrupt(struct emu10k1x * emu,unsigned int status)1292 static void snd_emu10k1x_midi_interrupt(struct emu10k1x *emu, unsigned int status)
1293 {
1294 	do_emu10k1x_midi_interrupt(emu, &emu->midi, status);
1295 }
1296 
snd_emu10k1x_midi_cmd(struct emu10k1x * emu,struct emu10k1x_midi * midi,unsigned char cmd,int ack)1297 static int snd_emu10k1x_midi_cmd(struct emu10k1x * emu,
1298 				  struct emu10k1x_midi *midi, unsigned char cmd, int ack)
1299 {
1300 	unsigned long flags;
1301 	int timeout, ok;
1302 
1303 	spin_lock_irqsave(&midi->input_lock, flags);
1304 	mpu401_write_data(emu, midi, 0x00);
1305 	/* mpu401_clear_rx(emu, midi); */
1306 
1307 	mpu401_write_cmd(emu, midi, cmd);
1308 	if (ack) {
1309 		ok = 0;
1310 		timeout = 10000;
1311 		while (!ok && timeout-- > 0) {
1312 			if (mpu401_input_avail(emu, midi)) {
1313 				if (mpu401_read_data(emu, midi) == MPU401_ACK)
1314 					ok = 1;
1315 			}
1316 		}
1317 		if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK)
1318 			ok = 1;
1319 	} else {
1320 		ok = 1;
1321 	}
1322 	spin_unlock_irqrestore(&midi->input_lock, flags);
1323 	if (!ok) {
1324 		dev_err(emu->card->dev,
1325 			"midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n",
1326 			   cmd, emu->port,
1327 			   mpu401_read_stat(emu, midi),
1328 			   mpu401_read_data(emu, midi));
1329 		return 1;
1330 	}
1331 	return 0;
1332 }
1333 
snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream * substream)1334 static int snd_emu10k1x_midi_input_open(struct snd_rawmidi_substream *substream)
1335 {
1336 	struct emu10k1x *emu;
1337 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1338 	unsigned long flags;
1339 
1340 	emu = midi->emu;
1341 	if (snd_BUG_ON(!emu))
1342 		return -ENXIO;
1343 	spin_lock_irqsave(&midi->open_lock, flags);
1344 	midi->midi_mode |= EMU10K1X_MIDI_MODE_INPUT;
1345 	midi->substream_input = substream;
1346 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1347 		spin_unlock_irqrestore(&midi->open_lock, flags);
1348 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1349 			goto error_out;
1350 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1351 			goto error_out;
1352 	} else {
1353 		spin_unlock_irqrestore(&midi->open_lock, flags);
1354 	}
1355 	return 0;
1356 
1357 error_out:
1358 	return -EIO;
1359 }
1360 
snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream * substream)1361 static int snd_emu10k1x_midi_output_open(struct snd_rawmidi_substream *substream)
1362 {
1363 	struct emu10k1x *emu;
1364 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1365 	unsigned long flags;
1366 
1367 	emu = midi->emu;
1368 	if (snd_BUG_ON(!emu))
1369 		return -ENXIO;
1370 	spin_lock_irqsave(&midi->open_lock, flags);
1371 	midi->midi_mode |= EMU10K1X_MIDI_MODE_OUTPUT;
1372 	midi->substream_output = substream;
1373 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1374 		spin_unlock_irqrestore(&midi->open_lock, flags);
1375 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 1))
1376 			goto error_out;
1377 		if (snd_emu10k1x_midi_cmd(emu, midi, MPU401_ENTER_UART, 1))
1378 			goto error_out;
1379 	} else {
1380 		spin_unlock_irqrestore(&midi->open_lock, flags);
1381 	}
1382 	return 0;
1383 
1384 error_out:
1385 	return -EIO;
1386 }
1387 
snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream * substream)1388 static int snd_emu10k1x_midi_input_close(struct snd_rawmidi_substream *substream)
1389 {
1390 	struct emu10k1x *emu;
1391 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1392 	unsigned long flags;
1393 	int err = 0;
1394 
1395 	emu = midi->emu;
1396 	if (snd_BUG_ON(!emu))
1397 		return -ENXIO;
1398 	spin_lock_irqsave(&midi->open_lock, flags);
1399 	snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1400 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_INPUT;
1401 	midi->substream_input = NULL;
1402 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT)) {
1403 		spin_unlock_irqrestore(&midi->open_lock, flags);
1404 		err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1405 	} else {
1406 		spin_unlock_irqrestore(&midi->open_lock, flags);
1407 	}
1408 	return err;
1409 }
1410 
snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream * substream)1411 static int snd_emu10k1x_midi_output_close(struct snd_rawmidi_substream *substream)
1412 {
1413 	struct emu10k1x *emu;
1414 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1415 	unsigned long flags;
1416 	int err = 0;
1417 
1418 	emu = midi->emu;
1419 	if (snd_BUG_ON(!emu))
1420 		return -ENXIO;
1421 	spin_lock_irqsave(&midi->open_lock, flags);
1422 	snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1423 	midi->midi_mode &= ~EMU10K1X_MIDI_MODE_OUTPUT;
1424 	midi->substream_output = NULL;
1425 	if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_INPUT)) {
1426 		spin_unlock_irqrestore(&midi->open_lock, flags);
1427 		err = snd_emu10k1x_midi_cmd(emu, midi, MPU401_RESET, 0);
1428 	} else {
1429 		spin_unlock_irqrestore(&midi->open_lock, flags);
1430 	}
1431 	return err;
1432 }
1433 
snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream * substream,int up)1434 static void snd_emu10k1x_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
1435 {
1436 	struct emu10k1x *emu;
1437 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1438 	emu = midi->emu;
1439 	if (snd_BUG_ON(!emu))
1440 		return;
1441 
1442 	if (up)
1443 		snd_emu10k1x_intr_enable(emu, midi->rx_enable);
1444 	else
1445 		snd_emu10k1x_intr_disable(emu, midi->rx_enable);
1446 }
1447 
snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream * substream,int up)1448 static void snd_emu10k1x_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
1449 {
1450 	struct emu10k1x *emu;
1451 	struct emu10k1x_midi *midi = substream->rmidi->private_data;
1452 	unsigned long flags;
1453 
1454 	emu = midi->emu;
1455 	if (snd_BUG_ON(!emu))
1456 		return;
1457 
1458 	if (up) {
1459 		int max = 4;
1460 		unsigned char byte;
1461 
1462 		/* try to send some amount of bytes here before interrupts */
1463 		spin_lock_irqsave(&midi->output_lock, flags);
1464 		while (max > 0) {
1465 			if (mpu401_output_ready(emu, midi)) {
1466 				if (!(midi->midi_mode & EMU10K1X_MIDI_MODE_OUTPUT) ||
1467 				    snd_rawmidi_transmit(substream, &byte, 1) != 1) {
1468 					/* no more data */
1469 					spin_unlock_irqrestore(&midi->output_lock, flags);
1470 					return;
1471 				}
1472 				mpu401_write_data(emu, midi, byte);
1473 				max--;
1474 			} else {
1475 				break;
1476 			}
1477 		}
1478 		spin_unlock_irqrestore(&midi->output_lock, flags);
1479 		snd_emu10k1x_intr_enable(emu, midi->tx_enable);
1480 	} else {
1481 		snd_emu10k1x_intr_disable(emu, midi->tx_enable);
1482 	}
1483 }
1484 
1485 /*
1486 
1487  */
1488 
1489 static struct snd_rawmidi_ops snd_emu10k1x_midi_output =
1490 {
1491 	.open =		snd_emu10k1x_midi_output_open,
1492 	.close =	snd_emu10k1x_midi_output_close,
1493 	.trigger =	snd_emu10k1x_midi_output_trigger,
1494 };
1495 
1496 static struct snd_rawmidi_ops snd_emu10k1x_midi_input =
1497 {
1498 	.open =		snd_emu10k1x_midi_input_open,
1499 	.close =	snd_emu10k1x_midi_input_close,
1500 	.trigger =	snd_emu10k1x_midi_input_trigger,
1501 };
1502 
snd_emu10k1x_midi_free(struct snd_rawmidi * rmidi)1503 static void snd_emu10k1x_midi_free(struct snd_rawmidi *rmidi)
1504 {
1505 	struct emu10k1x_midi *midi = rmidi->private_data;
1506 	midi->interrupt = NULL;
1507 	midi->rmidi = NULL;
1508 }
1509 
emu10k1x_midi_init(struct emu10k1x * emu,struct emu10k1x_midi * midi,int device,char * name)1510 static int emu10k1x_midi_init(struct emu10k1x *emu,
1511 			      struct emu10k1x_midi *midi, int device,
1512 			      char *name)
1513 {
1514 	struct snd_rawmidi *rmidi;
1515 	int err;
1516 
1517 	if ((err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi)) < 0)
1518 		return err;
1519 	midi->emu = emu;
1520 	spin_lock_init(&midi->open_lock);
1521 	spin_lock_init(&midi->input_lock);
1522 	spin_lock_init(&midi->output_lock);
1523 	strcpy(rmidi->name, name);
1524 	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1x_midi_output);
1525 	snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1x_midi_input);
1526 	rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
1527 	                     SNDRV_RAWMIDI_INFO_INPUT |
1528 	                     SNDRV_RAWMIDI_INFO_DUPLEX;
1529 	rmidi->private_data = midi;
1530 	rmidi->private_free = snd_emu10k1x_midi_free;
1531 	midi->rmidi = rmidi;
1532 	return 0;
1533 }
1534 
snd_emu10k1x_midi(struct emu10k1x * emu)1535 static int snd_emu10k1x_midi(struct emu10k1x *emu)
1536 {
1537 	struct emu10k1x_midi *midi = &emu->midi;
1538 	int err;
1539 
1540 	if ((err = emu10k1x_midi_init(emu, midi, 0, "EMU10K1X MPU-401 (UART)")) < 0)
1541 		return err;
1542 
1543 	midi->tx_enable = INTE_MIDITXENABLE;
1544 	midi->rx_enable = INTE_MIDIRXENABLE;
1545 	midi->port = MUDATA;
1546 	midi->ipr_tx = IPR_MIDITRANSBUFEMPTY;
1547 	midi->ipr_rx = IPR_MIDIRECVBUFEMPTY;
1548 	midi->interrupt = snd_emu10k1x_midi_interrupt;
1549 	return 0;
1550 }
1551 
snd_emu10k1x_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)1552 static int snd_emu10k1x_probe(struct pci_dev *pci,
1553 			      const struct pci_device_id *pci_id)
1554 {
1555 	static int dev;
1556 	struct snd_card *card;
1557 	struct emu10k1x *chip;
1558 	int err;
1559 
1560 	if (dev >= SNDRV_CARDS)
1561 		return -ENODEV;
1562 	if (!enable[dev]) {
1563 		dev++;
1564 		return -ENOENT;
1565 	}
1566 
1567 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1568 			   0, &card);
1569 	if (err < 0)
1570 		return err;
1571 
1572 	if ((err = snd_emu10k1x_create(card, pci, &chip)) < 0) {
1573 		snd_card_free(card);
1574 		return err;
1575 	}
1576 
1577 	if ((err = snd_emu10k1x_pcm(chip, 0)) < 0) {
1578 		snd_card_free(card);
1579 		return err;
1580 	}
1581 	if ((err = snd_emu10k1x_pcm(chip, 1)) < 0) {
1582 		snd_card_free(card);
1583 		return err;
1584 	}
1585 	if ((err = snd_emu10k1x_pcm(chip, 2)) < 0) {
1586 		snd_card_free(card);
1587 		return err;
1588 	}
1589 
1590 	if ((err = snd_emu10k1x_ac97(chip)) < 0) {
1591 		snd_card_free(card);
1592 		return err;
1593 	}
1594 
1595 	if ((err = snd_emu10k1x_mixer(chip)) < 0) {
1596 		snd_card_free(card);
1597 		return err;
1598 	}
1599 
1600 	if ((err = snd_emu10k1x_midi(chip)) < 0) {
1601 		snd_card_free(card);
1602 		return err;
1603 	}
1604 
1605 	snd_emu10k1x_proc_init(chip);
1606 
1607 	strcpy(card->driver, "EMU10K1X");
1608 	strcpy(card->shortname, "Dell Sound Blaster Live!");
1609 	sprintf(card->longname, "%s at 0x%lx irq %i",
1610 		card->shortname, chip->port, chip->irq);
1611 
1612 	if ((err = snd_card_register(card)) < 0) {
1613 		snd_card_free(card);
1614 		return err;
1615 	}
1616 
1617 	pci_set_drvdata(pci, card);
1618 	dev++;
1619 	return 0;
1620 }
1621 
snd_emu10k1x_remove(struct pci_dev * pci)1622 static void snd_emu10k1x_remove(struct pci_dev *pci)
1623 {
1624 	snd_card_free(pci_get_drvdata(pci));
1625 }
1626 
1627 // PCI IDs
1628 static const struct pci_device_id snd_emu10k1x_ids[] = {
1629 	{ PCI_VDEVICE(CREATIVE, 0x0006), 0 },	/* Dell OEM version (EMU10K1) */
1630 	{ 0, }
1631 };
1632 MODULE_DEVICE_TABLE(pci, snd_emu10k1x_ids);
1633 
1634 // pci_driver definition
1635 static struct pci_driver emu10k1x_driver = {
1636 	.name = KBUILD_MODNAME,
1637 	.id_table = snd_emu10k1x_ids,
1638 	.probe = snd_emu10k1x_probe,
1639 	.remove = snd_emu10k1x_remove,
1640 };
1641 
1642 module_pci_driver(emu10k1x_driver);
1643