xref: /openbmc/linux/sound/pci/fm801.c (revision 6774def6)
1 /*
2  *  The driver for the ForteMedia FM801 based soundcards
3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4  *
5  *  Support FM only card by Andy Shevchenko <andy@smile.org.ua>
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22 
23 #include <linux/delay.h>
24 #include <linux/init.h>
25 #include <linux/interrupt.h>
26 #include <linux/io.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/module.h>
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/tlv.h>
33 #include <sound/ac97_codec.h>
34 #include <sound/mpu401.h>
35 #include <sound/opl3.h>
36 #include <sound/initval.h>
37 
38 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
39 #include <media/tea575x.h>
40 #endif
41 
42 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
43 MODULE_DESCRIPTION("ForteMedia FM801");
44 MODULE_LICENSE("GPL");
45 MODULE_SUPPORTED_DEVICE("{{ForteMedia,FM801},"
46 		"{Genius,SoundMaker Live 5.1}}");
47 
48 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
49 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
50 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
51 /*
52  *  Enable TEA575x tuner
53  *    1 = MediaForte 256-PCS
54  *    2 = MediaForte 256-PCP
55  *    3 = MediaForte 64-PCR
56  *   16 = setup tuner only (this is additional bit), i.e. SF64-PCR FM card
57  *  High 16-bits are video (radio) device number + 1
58  */
59 static int tea575x_tuner[SNDRV_CARDS];
60 static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
61 
62 module_param_array(index, int, NULL, 0444);
63 MODULE_PARM_DESC(index, "Index value for the FM801 soundcard.");
64 module_param_array(id, charp, NULL, 0444);
65 MODULE_PARM_DESC(id, "ID string for the FM801 soundcard.");
66 module_param_array(enable, bool, NULL, 0444);
67 MODULE_PARM_DESC(enable, "Enable FM801 soundcard.");
68 module_param_array(tea575x_tuner, int, NULL, 0444);
69 MODULE_PARM_DESC(tea575x_tuner, "TEA575x tuner access method (0 = auto, 1 = SF256-PCS, 2=SF256-PCP, 3=SF64-PCR, 8=disable, +16=tuner-only).");
70 module_param_array(radio_nr, int, NULL, 0444);
71 MODULE_PARM_DESC(radio_nr, "Radio device numbers");
72 
73 
74 #define TUNER_DISABLED		(1<<3)
75 #define TUNER_ONLY		(1<<4)
76 #define TUNER_TYPE_MASK		(~TUNER_ONLY & 0xFFFF)
77 
78 /*
79  *  Direct registers
80  */
81 
82 #define fm801_writew(chip,reg,value)	outw((value), chip->port + FM801_##reg)
83 #define fm801_readw(chip,reg)		inw(chip->port + FM801_##reg)
84 
85 #define fm801_writel(chip,reg,value)	outl((value), chip->port + FM801_##reg)
86 
87 #define FM801_PCM_VOL		0x00	/* PCM Output Volume */
88 #define FM801_FM_VOL		0x02	/* FM Output Volume */
89 #define FM801_I2S_VOL		0x04	/* I2S Volume */
90 #define FM801_REC_SRC		0x06	/* Record Source */
91 #define FM801_PLY_CTRL		0x08	/* Playback Control */
92 #define FM801_PLY_COUNT		0x0a	/* Playback Count */
93 #define FM801_PLY_BUF1		0x0c	/* Playback Bufer I */
94 #define FM801_PLY_BUF2		0x10	/* Playback Buffer II */
95 #define FM801_CAP_CTRL		0x14	/* Capture Control */
96 #define FM801_CAP_COUNT		0x16	/* Capture Count */
97 #define FM801_CAP_BUF1		0x18	/* Capture Buffer I */
98 #define FM801_CAP_BUF2		0x1c	/* Capture Buffer II */
99 #define FM801_CODEC_CTRL	0x22	/* Codec Control */
100 #define FM801_I2S_MODE		0x24	/* I2S Mode Control */
101 #define FM801_VOLUME		0x26	/* Volume Up/Down/Mute Status */
102 #define FM801_I2C_CTRL		0x29	/* I2C Control */
103 #define FM801_AC97_CMD		0x2a	/* AC'97 Command */
104 #define FM801_AC97_DATA		0x2c	/* AC'97 Data */
105 #define FM801_MPU401_DATA	0x30	/* MPU401 Data */
106 #define FM801_MPU401_CMD	0x31	/* MPU401 Command */
107 #define FM801_GPIO_CTRL		0x52	/* General Purpose I/O Control */
108 #define FM801_GEN_CTRL		0x54	/* General Control */
109 #define FM801_IRQ_MASK		0x56	/* Interrupt Mask */
110 #define FM801_IRQ_STATUS	0x5a	/* Interrupt Status */
111 #define FM801_OPL3_BANK0	0x68	/* OPL3 Status Read / Bank 0 Write */
112 #define FM801_OPL3_DATA0	0x69	/* OPL3 Data 0 Write */
113 #define FM801_OPL3_BANK1	0x6a	/* OPL3 Bank 1 Write */
114 #define FM801_OPL3_DATA1	0x6b	/* OPL3 Bank 1 Write */
115 #define FM801_POWERDOWN		0x70	/* Blocks Power Down Control */
116 
117 /* codec access */
118 #define FM801_AC97_READ		(1<<7)	/* read=1, write=0 */
119 #define FM801_AC97_VALID	(1<<8)	/* port valid=1 */
120 #define FM801_AC97_BUSY		(1<<9)	/* busy=1 */
121 #define FM801_AC97_ADDR_SHIFT	10	/* codec id (2bit) */
122 
123 /* playback and record control register bits */
124 #define FM801_BUF1_LAST		(1<<1)
125 #define FM801_BUF2_LAST		(1<<2)
126 #define FM801_START		(1<<5)
127 #define FM801_PAUSE		(1<<6)
128 #define FM801_IMMED_STOP	(1<<7)
129 #define FM801_RATE_SHIFT	8
130 #define FM801_RATE_MASK		(15 << FM801_RATE_SHIFT)
131 #define FM801_CHANNELS_4	(1<<12)	/* playback only */
132 #define FM801_CHANNELS_6	(2<<12)	/* playback only */
133 #define FM801_CHANNELS_6MS	(3<<12)	/* playback only */
134 #define FM801_CHANNELS_MASK	(3<<12)
135 #define FM801_16BIT		(1<<14)
136 #define FM801_STEREO		(1<<15)
137 
138 /* IRQ status bits */
139 #define FM801_IRQ_PLAYBACK	(1<<8)
140 #define FM801_IRQ_CAPTURE	(1<<9)
141 #define FM801_IRQ_VOLUME	(1<<14)
142 #define FM801_IRQ_MPU		(1<<15)
143 
144 /* GPIO control register */
145 #define FM801_GPIO_GP0		(1<<0)	/* read/write */
146 #define FM801_GPIO_GP1		(1<<1)
147 #define FM801_GPIO_GP2		(1<<2)
148 #define FM801_GPIO_GP3		(1<<3)
149 #define FM801_GPIO_GP(x)	(1<<(0+(x)))
150 #define FM801_GPIO_GD0		(1<<8)	/* directions: 1 = input, 0 = output*/
151 #define FM801_GPIO_GD1		(1<<9)
152 #define FM801_GPIO_GD2		(1<<10)
153 #define FM801_GPIO_GD3		(1<<11)
154 #define FM801_GPIO_GD(x)	(1<<(8+(x)))
155 #define FM801_GPIO_GS0		(1<<12)	/* function select: */
156 #define FM801_GPIO_GS1		(1<<13)	/*    1 = GPIO */
157 #define FM801_GPIO_GS2		(1<<14)	/*    0 = other (S/PDIF, VOL) */
158 #define FM801_GPIO_GS3		(1<<15)
159 #define FM801_GPIO_GS(x)	(1<<(12+(x)))
160 
161 /**
162  * struct fm801 - describes FM801 chip
163  * @port:		I/O port number
164  * @multichannel:	multichannel support
165  * @secondary:		secondary codec
166  * @secondary_addr:	address of the secondary codec
167  * @tea575x_tuner:	tuner access method & flags
168  * @ply_ctrl:		playback control
169  * @cap_ctrl:		capture control
170  */
171 struct fm801 {
172 	int irq;
173 
174 	unsigned long port;
175 	unsigned int multichannel: 1,
176 		     secondary: 1;
177 	unsigned char secondary_addr;
178 	unsigned int tea575x_tuner;
179 
180 	unsigned short ply_ctrl;
181 	unsigned short cap_ctrl;
182 
183 	unsigned long ply_buffer;
184 	unsigned int ply_buf;
185 	unsigned int ply_count;
186 	unsigned int ply_size;
187 	unsigned int ply_pos;
188 
189 	unsigned long cap_buffer;
190 	unsigned int cap_buf;
191 	unsigned int cap_count;
192 	unsigned int cap_size;
193 	unsigned int cap_pos;
194 
195 	struct snd_ac97_bus *ac97_bus;
196 	struct snd_ac97 *ac97;
197 	struct snd_ac97 *ac97_sec;
198 
199 	struct pci_dev *pci;
200 	struct snd_card *card;
201 	struct snd_pcm *pcm;
202 	struct snd_rawmidi *rmidi;
203 	struct snd_pcm_substream *playback_substream;
204 	struct snd_pcm_substream *capture_substream;
205 	unsigned int p_dma_size;
206 	unsigned int c_dma_size;
207 
208 	spinlock_t reg_lock;
209 	struct snd_info_entry *proc_entry;
210 
211 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
212 	struct v4l2_device v4l2_dev;
213 	struct snd_tea575x tea;
214 #endif
215 
216 #ifdef CONFIG_PM_SLEEP
217 	u16 saved_regs[0x20];
218 #endif
219 };
220 
221 static const struct pci_device_id snd_fm801_ids[] = {
222 	{ 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* FM801 */
223 	{ 0x5213, 0x0510, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* Gallant Odyssey Sound 4 */
224 	{ 0, }
225 };
226 
227 MODULE_DEVICE_TABLE(pci, snd_fm801_ids);
228 
229 /*
230  *  common I/O routines
231  */
232 
233 static bool fm801_ac97_is_ready(struct fm801 *chip, unsigned int iterations)
234 {
235 	unsigned int idx;
236 
237 	for (idx = 0; idx < iterations; idx++) {
238 		if (!(fm801_readw(chip, AC97_CMD) & FM801_AC97_BUSY))
239 			return true;
240 		udelay(10);
241 	}
242 	return false;
243 }
244 
245 static bool fm801_ac97_is_valid(struct fm801 *chip, unsigned int iterations)
246 {
247 	unsigned int idx;
248 
249 	for (idx = 0; idx < iterations; idx++) {
250 		if (fm801_readw(chip, AC97_CMD) & FM801_AC97_VALID)
251 			return true;
252 		udelay(10);
253 	}
254 	return false;
255 }
256 
257 static int snd_fm801_update_bits(struct fm801 *chip, unsigned short reg,
258 				 unsigned short mask, unsigned short value)
259 {
260 	int change;
261 	unsigned long flags;
262 	unsigned short old, new;
263 
264 	spin_lock_irqsave(&chip->reg_lock, flags);
265 	old = inw(chip->port + reg);
266 	new = (old & ~mask) | value;
267 	change = old != new;
268 	if (change)
269 		outw(new, chip->port + reg);
270 	spin_unlock_irqrestore(&chip->reg_lock, flags);
271 	return change;
272 }
273 
274 static void snd_fm801_codec_write(struct snd_ac97 *ac97,
275 				  unsigned short reg,
276 				  unsigned short val)
277 {
278 	struct fm801 *chip = ac97->private_data;
279 
280 	/*
281 	 *  Wait until the codec interface is not ready..
282 	 */
283 	if (!fm801_ac97_is_ready(chip, 100)) {
284 		dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
285 		return;
286 	}
287 
288 	/* write data and address */
289 	fm801_writew(chip, AC97_DATA, val);
290 	fm801_writew(chip, AC97_CMD, reg | (ac97->addr << FM801_AC97_ADDR_SHIFT));
291 	/*
292 	 *  Wait until the write command is not completed..
293 	 */
294 	if (!fm801_ac97_is_ready(chip, 1000))
295 		dev_err(chip->card->dev, "AC'97 interface #%d is busy (2)\n",
296 		ac97->num);
297 }
298 
299 static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short reg)
300 {
301 	struct fm801 *chip = ac97->private_data;
302 
303 	/*
304 	 *  Wait until the codec interface is not ready..
305 	 */
306 	if (!fm801_ac97_is_ready(chip, 100)) {
307 		dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
308 		return 0;
309 	}
310 
311 	/* read command */
312 	fm801_writew(chip, AC97_CMD,
313 		     reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
314 	if (!fm801_ac97_is_ready(chip, 100)) {
315 		dev_err(chip->card->dev, "AC'97 interface #%d is busy (2)\n",
316 			ac97->num);
317 		return 0;
318 	}
319 
320 	if (!fm801_ac97_is_valid(chip, 1000)) {
321 		dev_err(chip->card->dev,
322 			"AC'97 interface #%d is not valid (2)\n", ac97->num);
323 		return 0;
324 	}
325 
326 	return fm801_readw(chip, AC97_DATA);
327 }
328 
329 static unsigned int rates[] = {
330   5500,  8000,  9600, 11025,
331   16000, 19200, 22050, 32000,
332   38400, 44100, 48000
333 };
334 
335 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
336 	.count = ARRAY_SIZE(rates),
337 	.list = rates,
338 	.mask = 0,
339 };
340 
341 static unsigned int channels[] = {
342   2, 4, 6
343 };
344 
345 static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
346 	.count = ARRAY_SIZE(channels),
347 	.list = channels,
348 	.mask = 0,
349 };
350 
351 /*
352  *  Sample rate routines
353  */
354 
355 static unsigned short snd_fm801_rate_bits(unsigned int rate)
356 {
357 	unsigned int idx;
358 
359 	for (idx = 0; idx < ARRAY_SIZE(rates); idx++)
360 		if (rates[idx] == rate)
361 			return idx;
362 	snd_BUG();
363 	return ARRAY_SIZE(rates) - 1;
364 }
365 
366 /*
367  *  PCM part
368  */
369 
370 static int snd_fm801_playback_trigger(struct snd_pcm_substream *substream,
371 				      int cmd)
372 {
373 	struct fm801 *chip = snd_pcm_substream_chip(substream);
374 
375 	spin_lock(&chip->reg_lock);
376 	switch (cmd) {
377 	case SNDRV_PCM_TRIGGER_START:
378 		chip->ply_ctrl &= ~(FM801_BUF1_LAST |
379 				     FM801_BUF2_LAST |
380 				     FM801_PAUSE);
381 		chip->ply_ctrl |= FM801_START |
382 				   FM801_IMMED_STOP;
383 		break;
384 	case SNDRV_PCM_TRIGGER_STOP:
385 		chip->ply_ctrl &= ~(FM801_START | FM801_PAUSE);
386 		break;
387 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
388 	case SNDRV_PCM_TRIGGER_SUSPEND:
389 		chip->ply_ctrl |= FM801_PAUSE;
390 		break;
391 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
392 	case SNDRV_PCM_TRIGGER_RESUME:
393 		chip->ply_ctrl &= ~FM801_PAUSE;
394 		break;
395 	default:
396 		spin_unlock(&chip->reg_lock);
397 		snd_BUG();
398 		return -EINVAL;
399 	}
400 	fm801_writew(chip, PLY_CTRL, chip->ply_ctrl);
401 	spin_unlock(&chip->reg_lock);
402 	return 0;
403 }
404 
405 static int snd_fm801_capture_trigger(struct snd_pcm_substream *substream,
406 				     int cmd)
407 {
408 	struct fm801 *chip = snd_pcm_substream_chip(substream);
409 
410 	spin_lock(&chip->reg_lock);
411 	switch (cmd) {
412 	case SNDRV_PCM_TRIGGER_START:
413 		chip->cap_ctrl &= ~(FM801_BUF1_LAST |
414 				     FM801_BUF2_LAST |
415 				     FM801_PAUSE);
416 		chip->cap_ctrl |= FM801_START |
417 				   FM801_IMMED_STOP;
418 		break;
419 	case SNDRV_PCM_TRIGGER_STOP:
420 		chip->cap_ctrl &= ~(FM801_START | FM801_PAUSE);
421 		break;
422 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
423 	case SNDRV_PCM_TRIGGER_SUSPEND:
424 		chip->cap_ctrl |= FM801_PAUSE;
425 		break;
426 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
427 	case SNDRV_PCM_TRIGGER_RESUME:
428 		chip->cap_ctrl &= ~FM801_PAUSE;
429 		break;
430 	default:
431 		spin_unlock(&chip->reg_lock);
432 		snd_BUG();
433 		return -EINVAL;
434 	}
435 	fm801_writew(chip, CAP_CTRL, chip->cap_ctrl);
436 	spin_unlock(&chip->reg_lock);
437 	return 0;
438 }
439 
440 static int snd_fm801_hw_params(struct snd_pcm_substream *substream,
441 			       struct snd_pcm_hw_params *hw_params)
442 {
443 	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
444 }
445 
446 static int snd_fm801_hw_free(struct snd_pcm_substream *substream)
447 {
448 	return snd_pcm_lib_free_pages(substream);
449 }
450 
451 static int snd_fm801_playback_prepare(struct snd_pcm_substream *substream)
452 {
453 	struct fm801 *chip = snd_pcm_substream_chip(substream);
454 	struct snd_pcm_runtime *runtime = substream->runtime;
455 
456 	chip->ply_size = snd_pcm_lib_buffer_bytes(substream);
457 	chip->ply_count = snd_pcm_lib_period_bytes(substream);
458 	spin_lock_irq(&chip->reg_lock);
459 	chip->ply_ctrl &= ~(FM801_START | FM801_16BIT |
460 			     FM801_STEREO | FM801_RATE_MASK |
461 			     FM801_CHANNELS_MASK);
462 	if (snd_pcm_format_width(runtime->format) == 16)
463 		chip->ply_ctrl |= FM801_16BIT;
464 	if (runtime->channels > 1) {
465 		chip->ply_ctrl |= FM801_STEREO;
466 		if (runtime->channels == 4)
467 			chip->ply_ctrl |= FM801_CHANNELS_4;
468 		else if (runtime->channels == 6)
469 			chip->ply_ctrl |= FM801_CHANNELS_6;
470 	}
471 	chip->ply_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
472 	chip->ply_buf = 0;
473 	fm801_writew(chip, PLY_CTRL, chip->ply_ctrl);
474 	fm801_writew(chip, PLY_COUNT, chip->ply_count - 1);
475 	chip->ply_buffer = runtime->dma_addr;
476 	chip->ply_pos = 0;
477 	fm801_writel(chip, PLY_BUF1, chip->ply_buffer);
478 	fm801_writel(chip, PLY_BUF2,
479 		     chip->ply_buffer + (chip->ply_count % chip->ply_size));
480 	spin_unlock_irq(&chip->reg_lock);
481 	return 0;
482 }
483 
484 static int snd_fm801_capture_prepare(struct snd_pcm_substream *substream)
485 {
486 	struct fm801 *chip = snd_pcm_substream_chip(substream);
487 	struct snd_pcm_runtime *runtime = substream->runtime;
488 
489 	chip->cap_size = snd_pcm_lib_buffer_bytes(substream);
490 	chip->cap_count = snd_pcm_lib_period_bytes(substream);
491 	spin_lock_irq(&chip->reg_lock);
492 	chip->cap_ctrl &= ~(FM801_START | FM801_16BIT |
493 			     FM801_STEREO | FM801_RATE_MASK);
494 	if (snd_pcm_format_width(runtime->format) == 16)
495 		chip->cap_ctrl |= FM801_16BIT;
496 	if (runtime->channels > 1)
497 		chip->cap_ctrl |= FM801_STEREO;
498 	chip->cap_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
499 	chip->cap_buf = 0;
500 	fm801_writew(chip, CAP_CTRL, chip->cap_ctrl);
501 	fm801_writew(chip, CAP_COUNT, chip->cap_count - 1);
502 	chip->cap_buffer = runtime->dma_addr;
503 	chip->cap_pos = 0;
504 	fm801_writel(chip, CAP_BUF1, chip->cap_buffer);
505 	fm801_writel(chip, CAP_BUF2,
506 		     chip->cap_buffer + (chip->cap_count % chip->cap_size));
507 	spin_unlock_irq(&chip->reg_lock);
508 	return 0;
509 }
510 
511 static snd_pcm_uframes_t snd_fm801_playback_pointer(struct snd_pcm_substream *substream)
512 {
513 	struct fm801 *chip = snd_pcm_substream_chip(substream);
514 	size_t ptr;
515 
516 	if (!(chip->ply_ctrl & FM801_START))
517 		return 0;
518 	spin_lock(&chip->reg_lock);
519 	ptr = chip->ply_pos + (chip->ply_count - 1) - fm801_readw(chip, PLY_COUNT);
520 	if (fm801_readw(chip, IRQ_STATUS) & FM801_IRQ_PLAYBACK) {
521 		ptr += chip->ply_count;
522 		ptr %= chip->ply_size;
523 	}
524 	spin_unlock(&chip->reg_lock);
525 	return bytes_to_frames(substream->runtime, ptr);
526 }
527 
528 static snd_pcm_uframes_t snd_fm801_capture_pointer(struct snd_pcm_substream *substream)
529 {
530 	struct fm801 *chip = snd_pcm_substream_chip(substream);
531 	size_t ptr;
532 
533 	if (!(chip->cap_ctrl & FM801_START))
534 		return 0;
535 	spin_lock(&chip->reg_lock);
536 	ptr = chip->cap_pos + (chip->cap_count - 1) - fm801_readw(chip, CAP_COUNT);
537 	if (fm801_readw(chip, IRQ_STATUS) & FM801_IRQ_CAPTURE) {
538 		ptr += chip->cap_count;
539 		ptr %= chip->cap_size;
540 	}
541 	spin_unlock(&chip->reg_lock);
542 	return bytes_to_frames(substream->runtime, ptr);
543 }
544 
545 static irqreturn_t snd_fm801_interrupt(int irq, void *dev_id)
546 {
547 	struct fm801 *chip = dev_id;
548 	unsigned short status;
549 	unsigned int tmp;
550 
551 	status = fm801_readw(chip, IRQ_STATUS);
552 	status &= FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU|FM801_IRQ_VOLUME;
553 	if (! status)
554 		return IRQ_NONE;
555 	/* ack first */
556 	fm801_writew(chip, IRQ_STATUS, status);
557 	if (chip->pcm && (status & FM801_IRQ_PLAYBACK) && chip->playback_substream) {
558 		spin_lock(&chip->reg_lock);
559 		chip->ply_buf++;
560 		chip->ply_pos += chip->ply_count;
561 		chip->ply_pos %= chip->ply_size;
562 		tmp = chip->ply_pos + chip->ply_count;
563 		tmp %= chip->ply_size;
564 		if (chip->ply_buf & 1)
565 			fm801_writel(chip, PLY_BUF1, chip->ply_buffer + tmp);
566 		else
567 			fm801_writel(chip, PLY_BUF2, chip->ply_buffer + tmp);
568 		spin_unlock(&chip->reg_lock);
569 		snd_pcm_period_elapsed(chip->playback_substream);
570 	}
571 	if (chip->pcm && (status & FM801_IRQ_CAPTURE) && chip->capture_substream) {
572 		spin_lock(&chip->reg_lock);
573 		chip->cap_buf++;
574 		chip->cap_pos += chip->cap_count;
575 		chip->cap_pos %= chip->cap_size;
576 		tmp = chip->cap_pos + chip->cap_count;
577 		tmp %= chip->cap_size;
578 		if (chip->cap_buf & 1)
579 			fm801_writel(chip, CAP_BUF1, chip->cap_buffer + tmp);
580 		else
581 			fm801_writel(chip, CAP_BUF2, chip->cap_buffer + tmp);
582 		spin_unlock(&chip->reg_lock);
583 		snd_pcm_period_elapsed(chip->capture_substream);
584 	}
585 	if (chip->rmidi && (status & FM801_IRQ_MPU))
586 		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
587 	if (status & FM801_IRQ_VOLUME)
588 		;/* TODO */
589 
590 	return IRQ_HANDLED;
591 }
592 
593 static struct snd_pcm_hardware snd_fm801_playback =
594 {
595 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
596 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
597 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
598 				 SNDRV_PCM_INFO_MMAP_VALID),
599 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
600 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
601 	.rate_min =		5500,
602 	.rate_max =		48000,
603 	.channels_min =		1,
604 	.channels_max =		2,
605 	.buffer_bytes_max =	(128*1024),
606 	.period_bytes_min =	64,
607 	.period_bytes_max =	(128*1024),
608 	.periods_min =		1,
609 	.periods_max =		1024,
610 	.fifo_size =		0,
611 };
612 
613 static struct snd_pcm_hardware snd_fm801_capture =
614 {
615 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
616 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
617 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
618 				 SNDRV_PCM_INFO_MMAP_VALID),
619 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
620 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
621 	.rate_min =		5500,
622 	.rate_max =		48000,
623 	.channels_min =		1,
624 	.channels_max =		2,
625 	.buffer_bytes_max =	(128*1024),
626 	.period_bytes_min =	64,
627 	.period_bytes_max =	(128*1024),
628 	.periods_min =		1,
629 	.periods_max =		1024,
630 	.fifo_size =		0,
631 };
632 
633 static int snd_fm801_playback_open(struct snd_pcm_substream *substream)
634 {
635 	struct fm801 *chip = snd_pcm_substream_chip(substream);
636 	struct snd_pcm_runtime *runtime = substream->runtime;
637 	int err;
638 
639 	chip->playback_substream = substream;
640 	runtime->hw = snd_fm801_playback;
641 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
642 				   &hw_constraints_rates);
643 	if (chip->multichannel) {
644 		runtime->hw.channels_max = 6;
645 		snd_pcm_hw_constraint_list(runtime, 0,
646 					   SNDRV_PCM_HW_PARAM_CHANNELS,
647 					   &hw_constraints_channels);
648 	}
649 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
650 		return err;
651 	return 0;
652 }
653 
654 static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
655 {
656 	struct fm801 *chip = snd_pcm_substream_chip(substream);
657 	struct snd_pcm_runtime *runtime = substream->runtime;
658 	int err;
659 
660 	chip->capture_substream = substream;
661 	runtime->hw = snd_fm801_capture;
662 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
663 				   &hw_constraints_rates);
664 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
665 		return err;
666 	return 0;
667 }
668 
669 static int snd_fm801_playback_close(struct snd_pcm_substream *substream)
670 {
671 	struct fm801 *chip = snd_pcm_substream_chip(substream);
672 
673 	chip->playback_substream = NULL;
674 	return 0;
675 }
676 
677 static int snd_fm801_capture_close(struct snd_pcm_substream *substream)
678 {
679 	struct fm801 *chip = snd_pcm_substream_chip(substream);
680 
681 	chip->capture_substream = NULL;
682 	return 0;
683 }
684 
685 static struct snd_pcm_ops snd_fm801_playback_ops = {
686 	.open =		snd_fm801_playback_open,
687 	.close =	snd_fm801_playback_close,
688 	.ioctl =	snd_pcm_lib_ioctl,
689 	.hw_params =	snd_fm801_hw_params,
690 	.hw_free =	snd_fm801_hw_free,
691 	.prepare =	snd_fm801_playback_prepare,
692 	.trigger =	snd_fm801_playback_trigger,
693 	.pointer =	snd_fm801_playback_pointer,
694 };
695 
696 static struct snd_pcm_ops snd_fm801_capture_ops = {
697 	.open =		snd_fm801_capture_open,
698 	.close =	snd_fm801_capture_close,
699 	.ioctl =	snd_pcm_lib_ioctl,
700 	.hw_params =	snd_fm801_hw_params,
701 	.hw_free =	snd_fm801_hw_free,
702 	.prepare =	snd_fm801_capture_prepare,
703 	.trigger =	snd_fm801_capture_trigger,
704 	.pointer =	snd_fm801_capture_pointer,
705 };
706 
707 static int snd_fm801_pcm(struct fm801 *chip, int device, struct snd_pcm **rpcm)
708 {
709 	struct snd_pcm *pcm;
710 	int err;
711 
712 	if (rpcm)
713 		*rpcm = NULL;
714 	if ((err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm)) < 0)
715 		return err;
716 
717 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_fm801_playback_ops);
718 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_fm801_capture_ops);
719 
720 	pcm->private_data = chip;
721 	pcm->info_flags = 0;
722 	strcpy(pcm->name, "FM801");
723 	chip->pcm = pcm;
724 
725 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
726 					      snd_dma_pci_data(chip->pci),
727 					      chip->multichannel ? 128*1024 : 64*1024, 128*1024);
728 
729 	err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
730 				     snd_pcm_alt_chmaps,
731 				     chip->multichannel ? 6 : 2, 0,
732 				     NULL);
733 	if (err < 0)
734 		return err;
735 
736 	if (rpcm)
737 		*rpcm = pcm;
738 	return 0;
739 }
740 
741 /*
742  *  TEA5757 radio
743  */
744 
745 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
746 
747 /* GPIO to TEA575x maps */
748 struct snd_fm801_tea575x_gpio {
749 	u8 data, clk, wren, most;
750 	char *name;
751 };
752 
753 static struct snd_fm801_tea575x_gpio snd_fm801_tea575x_gpios[] = {
754 	{ .data = 1, .clk = 3, .wren = 2, .most = 0, .name = "SF256-PCS" },
755 	{ .data = 1, .clk = 0, .wren = 2, .most = 3, .name = "SF256-PCP" },
756 	{ .data = 2, .clk = 0, .wren = 1, .most = 3, .name = "SF64-PCR" },
757 };
758 
759 #define get_tea575x_gpio(chip) \
760 	(&snd_fm801_tea575x_gpios[((chip)->tea575x_tuner & TUNER_TYPE_MASK) - 1])
761 
762 static void snd_fm801_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
763 {
764 	struct fm801 *chip = tea->private_data;
765 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
766 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
767 
768 	reg &= ~(FM801_GPIO_GP(gpio.data) |
769 		 FM801_GPIO_GP(gpio.clk) |
770 		 FM801_GPIO_GP(gpio.wren));
771 
772 	reg |= (pins & TEA575X_DATA) ? FM801_GPIO_GP(gpio.data) : 0;
773 	reg |= (pins & TEA575X_CLK)  ? FM801_GPIO_GP(gpio.clk) : 0;
774 	/* WRITE_ENABLE is inverted */
775 	reg |= (pins & TEA575X_WREN) ? 0 : FM801_GPIO_GP(gpio.wren);
776 
777 	fm801_writew(chip, GPIO_CTRL, reg);
778 }
779 
780 static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
781 {
782 	struct fm801 *chip = tea->private_data;
783 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
784 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
785 	u8 ret;
786 
787 	ret = 0;
788 	if (reg & FM801_GPIO_GP(gpio.data))
789 		ret |= TEA575X_DATA;
790 	if (reg & FM801_GPIO_GP(gpio.most))
791 		ret |= TEA575X_MOST;
792 	return ret;
793 }
794 
795 static void snd_fm801_tea575x_set_direction(struct snd_tea575x *tea, bool output)
796 {
797 	struct fm801 *chip = tea->private_data;
798 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
799 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
800 
801 	/* use GPIO lines and set write enable bit */
802 	reg |= FM801_GPIO_GS(gpio.data) |
803 	       FM801_GPIO_GS(gpio.wren) |
804 	       FM801_GPIO_GS(gpio.clk) |
805 	       FM801_GPIO_GS(gpio.most);
806 	if (output) {
807 		/* all of lines are in the write direction */
808 		/* clear data and clock lines */
809 		reg &= ~(FM801_GPIO_GD(gpio.data) |
810 			 FM801_GPIO_GD(gpio.wren) |
811 			 FM801_GPIO_GD(gpio.clk) |
812 			 FM801_GPIO_GP(gpio.data) |
813 			 FM801_GPIO_GP(gpio.clk) |
814 			 FM801_GPIO_GP(gpio.wren));
815 	} else {
816 		/* use GPIO lines, set data direction to input */
817 		reg |= FM801_GPIO_GD(gpio.data) |
818 		       FM801_GPIO_GD(gpio.most) |
819 		       FM801_GPIO_GP(gpio.data) |
820 		       FM801_GPIO_GP(gpio.most) |
821 		       FM801_GPIO_GP(gpio.wren);
822 		/* all of lines are in the write direction, except data */
823 		/* clear data, write enable and clock lines */
824 		reg &= ~(FM801_GPIO_GD(gpio.wren) |
825 			 FM801_GPIO_GD(gpio.clk) |
826 			 FM801_GPIO_GP(gpio.clk));
827 	}
828 
829 	fm801_writew(chip, GPIO_CTRL, reg);
830 }
831 
832 static struct snd_tea575x_ops snd_fm801_tea_ops = {
833 	.set_pins = snd_fm801_tea575x_set_pins,
834 	.get_pins = snd_fm801_tea575x_get_pins,
835 	.set_direction = snd_fm801_tea575x_set_direction,
836 };
837 #endif
838 
839 /*
840  *  Mixer routines
841  */
842 
843 #define FM801_SINGLE(xname, reg, shift, mask, invert) \
844 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_single, \
845   .get = snd_fm801_get_single, .put = snd_fm801_put_single, \
846   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
847 
848 static int snd_fm801_info_single(struct snd_kcontrol *kcontrol,
849 				 struct snd_ctl_elem_info *uinfo)
850 {
851 	int mask = (kcontrol->private_value >> 16) & 0xff;
852 
853 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
854 	uinfo->count = 1;
855 	uinfo->value.integer.min = 0;
856 	uinfo->value.integer.max = mask;
857 	return 0;
858 }
859 
860 static int snd_fm801_get_single(struct snd_kcontrol *kcontrol,
861 				struct snd_ctl_elem_value *ucontrol)
862 {
863 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
864 	int reg = kcontrol->private_value & 0xff;
865 	int shift = (kcontrol->private_value >> 8) & 0xff;
866 	int mask = (kcontrol->private_value >> 16) & 0xff;
867 	int invert = (kcontrol->private_value >> 24) & 0xff;
868 
869 	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift) & mask;
870 	if (invert)
871 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
872 	return 0;
873 }
874 
875 static int snd_fm801_put_single(struct snd_kcontrol *kcontrol,
876 				struct snd_ctl_elem_value *ucontrol)
877 {
878 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
879 	int reg = kcontrol->private_value & 0xff;
880 	int shift = (kcontrol->private_value >> 8) & 0xff;
881 	int mask = (kcontrol->private_value >> 16) & 0xff;
882 	int invert = (kcontrol->private_value >> 24) & 0xff;
883 	unsigned short val;
884 
885 	val = (ucontrol->value.integer.value[0] & mask);
886 	if (invert)
887 		val = mask - val;
888 	return snd_fm801_update_bits(chip, reg, mask << shift, val << shift);
889 }
890 
891 #define FM801_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
892 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_double, \
893   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
894   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
895 #define FM801_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
896 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
897   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
898   .name = xname, .info = snd_fm801_info_double, \
899   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
900   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
901   .tlv = { .p = (xtlv) } }
902 
903 static int snd_fm801_info_double(struct snd_kcontrol *kcontrol,
904 				 struct snd_ctl_elem_info *uinfo)
905 {
906 	int mask = (kcontrol->private_value >> 16) & 0xff;
907 
908 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
909 	uinfo->count = 2;
910 	uinfo->value.integer.min = 0;
911 	uinfo->value.integer.max = mask;
912 	return 0;
913 }
914 
915 static int snd_fm801_get_double(struct snd_kcontrol *kcontrol,
916 				struct snd_ctl_elem_value *ucontrol)
917 {
918 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
919         int reg = kcontrol->private_value & 0xff;
920 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
921 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
922 	int mask = (kcontrol->private_value >> 16) & 0xff;
923 	int invert = (kcontrol->private_value >> 24) & 0xff;
924 
925 	spin_lock_irq(&chip->reg_lock);
926 	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift_left) & mask;
927 	ucontrol->value.integer.value[1] = (inw(chip->port + reg) >> shift_right) & mask;
928 	spin_unlock_irq(&chip->reg_lock);
929 	if (invert) {
930 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
931 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
932 	}
933 	return 0;
934 }
935 
936 static int snd_fm801_put_double(struct snd_kcontrol *kcontrol,
937 				struct snd_ctl_elem_value *ucontrol)
938 {
939 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
940 	int reg = kcontrol->private_value & 0xff;
941 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
942 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
943 	int mask = (kcontrol->private_value >> 16) & 0xff;
944 	int invert = (kcontrol->private_value >> 24) & 0xff;
945 	unsigned short val1, val2;
946 
947 	val1 = ucontrol->value.integer.value[0] & mask;
948 	val2 = ucontrol->value.integer.value[1] & mask;
949 	if (invert) {
950 		val1 = mask - val1;
951 		val2 = mask - val2;
952 	}
953 	return snd_fm801_update_bits(chip, reg,
954 				     (mask << shift_left) | (mask << shift_right),
955 				     (val1 << shift_left ) | (val2 << shift_right));
956 }
957 
958 static int snd_fm801_info_mux(struct snd_kcontrol *kcontrol,
959 			      struct snd_ctl_elem_info *uinfo)
960 {
961 	static char *texts[5] = {
962 		"AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
963 	};
964 
965 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
966 	uinfo->count = 1;
967 	uinfo->value.enumerated.items = 5;
968 	if (uinfo->value.enumerated.item > 4)
969 		uinfo->value.enumerated.item = 4;
970 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
971 	return 0;
972 }
973 
974 static int snd_fm801_get_mux(struct snd_kcontrol *kcontrol,
975 			     struct snd_ctl_elem_value *ucontrol)
976 {
977 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
978         unsigned short val;
979 
980 	val = fm801_readw(chip, REC_SRC) & 7;
981 	if (val > 4)
982 		val = 4;
983         ucontrol->value.enumerated.item[0] = val;
984         return 0;
985 }
986 
987 static int snd_fm801_put_mux(struct snd_kcontrol *kcontrol,
988 			     struct snd_ctl_elem_value *ucontrol)
989 {
990 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
991         unsigned short val;
992 
993         if ((val = ucontrol->value.enumerated.item[0]) > 4)
994                 return -EINVAL;
995 	return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
996 }
997 
998 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -3450, 150, 0);
999 
1000 #define FM801_CONTROLS ARRAY_SIZE(snd_fm801_controls)
1001 
1002 static struct snd_kcontrol_new snd_fm801_controls[] = {
1003 FM801_DOUBLE_TLV("Wave Playback Volume", FM801_PCM_VOL, 0, 8, 31, 1,
1004 		 db_scale_dsp),
1005 FM801_SINGLE("Wave Playback Switch", FM801_PCM_VOL, 15, 1, 1),
1006 FM801_DOUBLE_TLV("I2S Playback Volume", FM801_I2S_VOL, 0, 8, 31, 1,
1007 		 db_scale_dsp),
1008 FM801_SINGLE("I2S Playback Switch", FM801_I2S_VOL, 15, 1, 1),
1009 FM801_DOUBLE_TLV("FM Playback Volume", FM801_FM_VOL, 0, 8, 31, 1,
1010 		 db_scale_dsp),
1011 FM801_SINGLE("FM Playback Switch", FM801_FM_VOL, 15, 1, 1),
1012 {
1013 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1014 	.name = "Digital Capture Source",
1015 	.info = snd_fm801_info_mux,
1016 	.get = snd_fm801_get_mux,
1017 	.put = snd_fm801_put_mux,
1018 }
1019 };
1020 
1021 #define FM801_CONTROLS_MULTI ARRAY_SIZE(snd_fm801_controls_multi)
1022 
1023 static struct snd_kcontrol_new snd_fm801_controls_multi[] = {
1024 FM801_SINGLE("AC97 2ch->4ch Copy Switch", FM801_CODEC_CTRL, 7, 1, 0),
1025 FM801_SINGLE("AC97 18-bit Switch", FM801_CODEC_CTRL, 10, 1, 0),
1026 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), FM801_I2S_MODE, 8, 1, 0),
1027 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",PLAYBACK,SWITCH), FM801_I2S_MODE, 9, 1, 0),
1028 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",CAPTURE,SWITCH), FM801_I2S_MODE, 10, 1, 0),
1029 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), FM801_GEN_CTRL, 2, 1, 0),
1030 };
1031 
1032 static void snd_fm801_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1033 {
1034 	struct fm801 *chip = bus->private_data;
1035 	chip->ac97_bus = NULL;
1036 }
1037 
1038 static void snd_fm801_mixer_free_ac97(struct snd_ac97 *ac97)
1039 {
1040 	struct fm801 *chip = ac97->private_data;
1041 	if (ac97->num == 0) {
1042 		chip->ac97 = NULL;
1043 	} else {
1044 		chip->ac97_sec = NULL;
1045 	}
1046 }
1047 
1048 static int snd_fm801_mixer(struct fm801 *chip)
1049 {
1050 	struct snd_ac97_template ac97;
1051 	unsigned int i;
1052 	int err;
1053 	static struct snd_ac97_bus_ops ops = {
1054 		.write = snd_fm801_codec_write,
1055 		.read = snd_fm801_codec_read,
1056 	};
1057 
1058 	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1059 		return err;
1060 	chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;
1061 
1062 	memset(&ac97, 0, sizeof(ac97));
1063 	ac97.private_data = chip;
1064 	ac97.private_free = snd_fm801_mixer_free_ac97;
1065 	if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1066 		return err;
1067 	if (chip->secondary) {
1068 		ac97.num = 1;
1069 		ac97.addr = chip->secondary_addr;
1070 		if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
1071 			return err;
1072 	}
1073 	for (i = 0; i < FM801_CONTROLS; i++)
1074 		snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls[i], chip));
1075 	if (chip->multichannel) {
1076 		for (i = 0; i < FM801_CONTROLS_MULTI; i++)
1077 			snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
1078 	}
1079 	return 0;
1080 }
1081 
1082 /*
1083  *  initialization routines
1084  */
1085 
1086 static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
1087 			  unsigned short reg, unsigned long waits)
1088 {
1089 	unsigned long timeout = jiffies + waits;
1090 
1091 	fm801_writew(chip, AC97_CMD,
1092 		     reg | (codec_id << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
1093 	udelay(5);
1094 	do {
1095 		if ((fm801_readw(chip, AC97_CMD) &
1096 		     (FM801_AC97_VALID | FM801_AC97_BUSY)) == FM801_AC97_VALID)
1097 			return 0;
1098 		schedule_timeout_uninterruptible(1);
1099 	} while (time_after(timeout, jiffies));
1100 	return -EIO;
1101 }
1102 
1103 static int snd_fm801_chip_init(struct fm801 *chip, int resume)
1104 {
1105 	unsigned short cmdw;
1106 
1107 	if (chip->tea575x_tuner & TUNER_ONLY)
1108 		goto __ac97_ok;
1109 
1110 	/* codec cold reset + AC'97 warm reset */
1111 	fm801_writew(chip, CODEC_CTRL, (1 << 5) | (1 << 6));
1112 	fm801_readw(chip, CODEC_CTRL); /* flush posting data */
1113 	udelay(100);
1114 	fm801_writew(chip, CODEC_CTRL, 0);
1115 
1116 	if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
1117 		if (!resume) {
1118 			dev_info(chip->card->dev,
1119 				 "Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
1120 			chip->tea575x_tuner = 3 | TUNER_ONLY;
1121 			goto __ac97_ok;
1122 		}
1123 
1124 	if (chip->multichannel) {
1125 		if (chip->secondary_addr) {
1126 			wait_for_codec(chip, chip->secondary_addr,
1127 				       AC97_VENDOR_ID1, msecs_to_jiffies(50));
1128 		} else {
1129 			/* my card has the secondary codec */
1130 			/* at address #3, so the loop is inverted */
1131 			int i;
1132 			for (i = 3; i > 0; i--) {
1133 				if (!wait_for_codec(chip, i, AC97_VENDOR_ID1,
1134 						     msecs_to_jiffies(50))) {
1135 					cmdw = fm801_readw(chip, AC97_DATA);
1136 					if (cmdw != 0xffff && cmdw != 0) {
1137 						chip->secondary = 1;
1138 						chip->secondary_addr = i;
1139 						break;
1140 					}
1141 				}
1142 			}
1143 		}
1144 
1145 		/* the recovery phase, it seems that probing for non-existing codec might */
1146 		/* cause timeout problems */
1147 		wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
1148 	}
1149 
1150       __ac97_ok:
1151 
1152 	/* init volume */
1153 	fm801_writew(chip, PCM_VOL, 0x0808);
1154 	fm801_writew(chip, FM_VOL, 0x9f1f);
1155 	fm801_writew(chip, I2S_VOL, 0x8808);
1156 
1157 	/* I2S control - I2S mode */
1158 	fm801_writew(chip, I2S_MODE, 0x0003);
1159 
1160 	/* interrupt setup */
1161 	cmdw = fm801_readw(chip, IRQ_MASK);
1162 	if (chip->irq < 0)
1163 		cmdw |= 0x00c3;		/* mask everything, no PCM nor MPU */
1164 	else
1165 		cmdw &= ~0x0083;	/* unmask MPU, PLAYBACK & CAPTURE */
1166 	fm801_writew(chip, IRQ_MASK, cmdw);
1167 
1168 	/* interrupt clear */
1169 	fm801_writew(chip, IRQ_STATUS,
1170 		     FM801_IRQ_PLAYBACK | FM801_IRQ_CAPTURE | FM801_IRQ_MPU);
1171 
1172 	return 0;
1173 }
1174 
1175 
1176 static int snd_fm801_free(struct fm801 *chip)
1177 {
1178 	unsigned short cmdw;
1179 
1180 	if (chip->irq < 0)
1181 		goto __end_hw;
1182 
1183 	/* interrupt setup - mask everything */
1184 	cmdw = fm801_readw(chip, IRQ_MASK);
1185 	cmdw |= 0x00c3;
1186 	fm801_writew(chip, IRQ_MASK, cmdw);
1187 
1188       __end_hw:
1189 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1190 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1191 		snd_tea575x_exit(&chip->tea);
1192 		v4l2_device_unregister(&chip->v4l2_dev);
1193 	}
1194 #endif
1195 	if (chip->irq >= 0)
1196 		free_irq(chip->irq, chip);
1197 	pci_release_regions(chip->pci);
1198 	pci_disable_device(chip->pci);
1199 
1200 	kfree(chip);
1201 	return 0;
1202 }
1203 
1204 static int snd_fm801_dev_free(struct snd_device *device)
1205 {
1206 	struct fm801 *chip = device->device_data;
1207 	return snd_fm801_free(chip);
1208 }
1209 
1210 static int snd_fm801_create(struct snd_card *card,
1211 			    struct pci_dev *pci,
1212 			    int tea575x_tuner,
1213 			    int radio_nr,
1214 			    struct fm801 **rchip)
1215 {
1216 	struct fm801 *chip;
1217 	int err;
1218 	static struct snd_device_ops ops = {
1219 		.dev_free =	snd_fm801_dev_free,
1220 	};
1221 
1222 	*rchip = NULL;
1223 	if ((err = pci_enable_device(pci)) < 0)
1224 		return err;
1225 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1226 	if (chip == NULL) {
1227 		pci_disable_device(pci);
1228 		return -ENOMEM;
1229 	}
1230 	spin_lock_init(&chip->reg_lock);
1231 	chip->card = card;
1232 	chip->pci = pci;
1233 	chip->irq = -1;
1234 	chip->tea575x_tuner = tea575x_tuner;
1235 	if ((err = pci_request_regions(pci, "FM801")) < 0) {
1236 		kfree(chip);
1237 		pci_disable_device(pci);
1238 		return err;
1239 	}
1240 	chip->port = pci_resource_start(pci, 0);
1241 	if ((tea575x_tuner & TUNER_ONLY) == 0) {
1242 		if (request_irq(pci->irq, snd_fm801_interrupt, IRQF_SHARED,
1243 				KBUILD_MODNAME, chip)) {
1244 			dev_err(card->dev, "unable to grab IRQ %d\n", chip->irq);
1245 			snd_fm801_free(chip);
1246 			return -EBUSY;
1247 		}
1248 		chip->irq = pci->irq;
1249 		pci_set_master(pci);
1250 	}
1251 
1252 	if (pci->revision >= 0xb1)	/* FM801-AU */
1253 		chip->multichannel = 1;
1254 
1255 	snd_fm801_chip_init(chip, 0);
1256 	/* init might set tuner access method */
1257 	tea575x_tuner = chip->tea575x_tuner;
1258 
1259 	if (chip->irq >= 0 && (tea575x_tuner & TUNER_ONLY)) {
1260 		pci_clear_master(pci);
1261 		free_irq(chip->irq, chip);
1262 		chip->irq = -1;
1263 	}
1264 
1265 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1266 		snd_fm801_free(chip);
1267 		return err;
1268 	}
1269 
1270 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1271 	err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
1272 	if (err < 0) {
1273 		snd_fm801_free(chip);
1274 		return err;
1275 	}
1276 	chip->tea.v4l2_dev = &chip->v4l2_dev;
1277 	chip->tea.radio_nr = radio_nr;
1278 	chip->tea.private_data = chip;
1279 	chip->tea.ops = &snd_fm801_tea_ops;
1280 	sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
1281 	if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
1282 	    (tea575x_tuner & TUNER_TYPE_MASK) < 4) {
1283 		if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1284 			dev_err(card->dev, "TEA575x radio not found\n");
1285 			snd_fm801_free(chip);
1286 			return -ENODEV;
1287 		}
1288 	} else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
1289 		/* autodetect tuner connection */
1290 		for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
1291 			chip->tea575x_tuner = tea575x_tuner;
1292 			if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1293 				dev_info(card->dev,
1294 					 "detected TEA575x radio type %s\n",
1295 					   get_tea575x_gpio(chip)->name);
1296 				break;
1297 			}
1298 		}
1299 		if (tea575x_tuner == 4) {
1300 			dev_err(card->dev, "TEA575x radio not found\n");
1301 			chip->tea575x_tuner = TUNER_DISABLED;
1302 		}
1303 	}
1304 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1305 		strlcpy(chip->tea.card, get_tea575x_gpio(chip)->name,
1306 			sizeof(chip->tea.card));
1307 	}
1308 #endif
1309 
1310 	*rchip = chip;
1311 	return 0;
1312 }
1313 
1314 static int snd_card_fm801_probe(struct pci_dev *pci,
1315 				const struct pci_device_id *pci_id)
1316 {
1317 	static int dev;
1318 	struct snd_card *card;
1319 	struct fm801 *chip;
1320 	struct snd_opl3 *opl3;
1321 	int err;
1322 
1323         if (dev >= SNDRV_CARDS)
1324                 return -ENODEV;
1325 	if (!enable[dev]) {
1326 		dev++;
1327 		return -ENOENT;
1328 	}
1329 
1330 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1331 			   0, &card);
1332 	if (err < 0)
1333 		return err;
1334 	if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev], &chip)) < 0) {
1335 		snd_card_free(card);
1336 		return err;
1337 	}
1338 	card->private_data = chip;
1339 
1340 	strcpy(card->driver, "FM801");
1341 	strcpy(card->shortname, "ForteMedia FM801-");
1342 	strcat(card->shortname, chip->multichannel ? "AU" : "AS");
1343 	sprintf(card->longname, "%s at 0x%lx, irq %i",
1344 		card->shortname, chip->port, chip->irq);
1345 
1346 	if (chip->tea575x_tuner & TUNER_ONLY)
1347 		goto __fm801_tuner_only;
1348 
1349 	if ((err = snd_fm801_pcm(chip, 0, NULL)) < 0) {
1350 		snd_card_free(card);
1351 		return err;
1352 	}
1353 	if ((err = snd_fm801_mixer(chip)) < 0) {
1354 		snd_card_free(card);
1355 		return err;
1356 	}
1357 	if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
1358 				       chip->port + FM801_MPU401_DATA,
1359 				       MPU401_INFO_INTEGRATED |
1360 				       MPU401_INFO_IRQ_HOOK,
1361 				       -1, &chip->rmidi)) < 0) {
1362 		snd_card_free(card);
1363 		return err;
1364 	}
1365 	if ((err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
1366 				   chip->port + FM801_OPL3_BANK1,
1367 				   OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
1368 		snd_card_free(card);
1369 		return err;
1370 	}
1371 	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1372 		snd_card_free(card);
1373 		return err;
1374 	}
1375 
1376       __fm801_tuner_only:
1377 	if ((err = snd_card_register(card)) < 0) {
1378 		snd_card_free(card);
1379 		return err;
1380 	}
1381 	pci_set_drvdata(pci, card);
1382 	dev++;
1383 	return 0;
1384 }
1385 
1386 static void snd_card_fm801_remove(struct pci_dev *pci)
1387 {
1388 	snd_card_free(pci_get_drvdata(pci));
1389 }
1390 
1391 #ifdef CONFIG_PM_SLEEP
1392 static unsigned char saved_regs[] = {
1393 	FM801_PCM_VOL, FM801_I2S_VOL, FM801_FM_VOL, FM801_REC_SRC,
1394 	FM801_PLY_CTRL, FM801_PLY_COUNT, FM801_PLY_BUF1, FM801_PLY_BUF2,
1395 	FM801_CAP_CTRL, FM801_CAP_COUNT, FM801_CAP_BUF1, FM801_CAP_BUF2,
1396 	FM801_CODEC_CTRL, FM801_I2S_MODE, FM801_VOLUME, FM801_GEN_CTRL,
1397 };
1398 
1399 static int snd_fm801_suspend(struct device *dev)
1400 {
1401 	struct pci_dev *pci = to_pci_dev(dev);
1402 	struct snd_card *card = dev_get_drvdata(dev);
1403 	struct fm801 *chip = card->private_data;
1404 	int i;
1405 
1406 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1407 	snd_pcm_suspend_all(chip->pcm);
1408 	snd_ac97_suspend(chip->ac97);
1409 	snd_ac97_suspend(chip->ac97_sec);
1410 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1411 		chip->saved_regs[i] = inw(chip->port + saved_regs[i]);
1412 	/* FIXME: tea575x suspend */
1413 
1414 	pci_disable_device(pci);
1415 	pci_save_state(pci);
1416 	pci_set_power_state(pci, PCI_D3hot);
1417 	return 0;
1418 }
1419 
1420 static int snd_fm801_resume(struct device *dev)
1421 {
1422 	struct pci_dev *pci = to_pci_dev(dev);
1423 	struct snd_card *card = dev_get_drvdata(dev);
1424 	struct fm801 *chip = card->private_data;
1425 	int i;
1426 
1427 	pci_set_power_state(pci, PCI_D0);
1428 	pci_restore_state(pci);
1429 	if (pci_enable_device(pci) < 0) {
1430 		dev_err(dev, "pci_enable_device failed, disabling device\n");
1431 		snd_card_disconnect(card);
1432 		return -EIO;
1433 	}
1434 	pci_set_master(pci);
1435 
1436 	snd_fm801_chip_init(chip, 1);
1437 	snd_ac97_resume(chip->ac97);
1438 	snd_ac97_resume(chip->ac97_sec);
1439 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1440 		outw(chip->saved_regs[i], chip->port + saved_regs[i]);
1441 
1442 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1443 	return 0;
1444 }
1445 
1446 static SIMPLE_DEV_PM_OPS(snd_fm801_pm, snd_fm801_suspend, snd_fm801_resume);
1447 #define SND_FM801_PM_OPS	&snd_fm801_pm
1448 #else
1449 #define SND_FM801_PM_OPS	NULL
1450 #endif /* CONFIG_PM_SLEEP */
1451 
1452 static struct pci_driver fm801_driver = {
1453 	.name = KBUILD_MODNAME,
1454 	.id_table = snd_fm801_ids,
1455 	.probe = snd_card_fm801_probe,
1456 	.remove = snd_card_fm801_remove,
1457 	.driver = {
1458 		.pm = SND_FM801_PM_OPS,
1459 	},
1460 };
1461 
1462 module_pci_driver(fm801_driver);
1463