xref: /openbmc/linux/sound/pci/fm801.c (revision 96de2506)
1 /*
2  *  The driver for the ForteMedia FM801 based soundcards
3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4  *
5  *   This program is free software; you can redistribute it and/or modify
6  *   it under the terms of the GNU General Public License as published by
7  *   the Free Software Foundation; either version 2 of the License, or
8  *   (at your option) any later version.
9  *
10  *   This program is distributed in the hope that it will be useful,
11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *   GNU General Public License for more details.
14  *
15  */
16 
17 #include <linux/delay.h>
18 #include <linux/init.h>
19 #include <linux/interrupt.h>
20 #include <linux/io.h>
21 #include <linux/pci.h>
22 #include <linux/slab.h>
23 #include <linux/module.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/tlv.h>
27 #include <sound/ac97_codec.h>
28 #include <sound/mpu401.h>
29 #include <sound/opl3.h>
30 #include <sound/initval.h>
31 
32 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
33 #include <media/drv-intf/tea575x.h>
34 #endif
35 
36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
37 MODULE_DESCRIPTION("ForteMedia FM801");
38 MODULE_LICENSE("GPL");
39 MODULE_SUPPORTED_DEVICE("{{ForteMedia,FM801},"
40 		"{Genius,SoundMaker Live 5.1}}");
41 
42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
44 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
45 /*
46  *  Enable TEA575x tuner
47  *    1 = MediaForte 256-PCS
48  *    2 = MediaForte 256-PCP
49  *    3 = MediaForte 64-PCR
50  *   16 = setup tuner only (this is additional bit), i.e. SF64-PCR FM card
51  *  High 16-bits are video (radio) device number + 1
52  */
53 static int tea575x_tuner[SNDRV_CARDS];
54 static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
55 
56 module_param_array(index, int, NULL, 0444);
57 MODULE_PARM_DESC(index, "Index value for the FM801 soundcard.");
58 module_param_array(id, charp, NULL, 0444);
59 MODULE_PARM_DESC(id, "ID string for the FM801 soundcard.");
60 module_param_array(enable, bool, NULL, 0444);
61 MODULE_PARM_DESC(enable, "Enable FM801 soundcard.");
62 module_param_array(tea575x_tuner, int, NULL, 0444);
63 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).");
64 module_param_array(radio_nr, int, NULL, 0444);
65 MODULE_PARM_DESC(radio_nr, "Radio device numbers");
66 
67 
68 #define TUNER_DISABLED		(1<<3)
69 #define TUNER_ONLY		(1<<4)
70 #define TUNER_TYPE_MASK		(~TUNER_ONLY & 0xFFFF)
71 
72 /*
73  *  Direct registers
74  */
75 
76 #define fm801_writew(chip,reg,value)	outw((value), chip->port + FM801_##reg)
77 #define fm801_readw(chip,reg)		inw(chip->port + FM801_##reg)
78 
79 #define fm801_writel(chip,reg,value)	outl((value), chip->port + FM801_##reg)
80 
81 #define FM801_PCM_VOL		0x00	/* PCM Output Volume */
82 #define FM801_FM_VOL		0x02	/* FM Output Volume */
83 #define FM801_I2S_VOL		0x04	/* I2S Volume */
84 #define FM801_REC_SRC		0x06	/* Record Source */
85 #define FM801_PLY_CTRL		0x08	/* Playback Control */
86 #define FM801_PLY_COUNT		0x0a	/* Playback Count */
87 #define FM801_PLY_BUF1		0x0c	/* Playback Bufer I */
88 #define FM801_PLY_BUF2		0x10	/* Playback Buffer II */
89 #define FM801_CAP_CTRL		0x14	/* Capture Control */
90 #define FM801_CAP_COUNT		0x16	/* Capture Count */
91 #define FM801_CAP_BUF1		0x18	/* Capture Buffer I */
92 #define FM801_CAP_BUF2		0x1c	/* Capture Buffer II */
93 #define FM801_CODEC_CTRL	0x22	/* Codec Control */
94 #define FM801_I2S_MODE		0x24	/* I2S Mode Control */
95 #define FM801_VOLUME		0x26	/* Volume Up/Down/Mute Status */
96 #define FM801_I2C_CTRL		0x29	/* I2C Control */
97 #define FM801_AC97_CMD		0x2a	/* AC'97 Command */
98 #define FM801_AC97_DATA		0x2c	/* AC'97 Data */
99 #define FM801_MPU401_DATA	0x30	/* MPU401 Data */
100 #define FM801_MPU401_CMD	0x31	/* MPU401 Command */
101 #define FM801_GPIO_CTRL		0x52	/* General Purpose I/O Control */
102 #define FM801_GEN_CTRL		0x54	/* General Control */
103 #define FM801_IRQ_MASK		0x56	/* Interrupt Mask */
104 #define FM801_IRQ_STATUS	0x5a	/* Interrupt Status */
105 #define FM801_OPL3_BANK0	0x68	/* OPL3 Status Read / Bank 0 Write */
106 #define FM801_OPL3_DATA0	0x69	/* OPL3 Data 0 Write */
107 #define FM801_OPL3_BANK1	0x6a	/* OPL3 Bank 1 Write */
108 #define FM801_OPL3_DATA1	0x6b	/* OPL3 Bank 1 Write */
109 #define FM801_POWERDOWN		0x70	/* Blocks Power Down Control */
110 
111 /* codec access */
112 #define FM801_AC97_READ		(1<<7)	/* read=1, write=0 */
113 #define FM801_AC97_VALID	(1<<8)	/* port valid=1 */
114 #define FM801_AC97_BUSY		(1<<9)	/* busy=1 */
115 #define FM801_AC97_ADDR_SHIFT	10	/* codec id (2bit) */
116 
117 /* playback and record control register bits */
118 #define FM801_BUF1_LAST		(1<<1)
119 #define FM801_BUF2_LAST		(1<<2)
120 #define FM801_START		(1<<5)
121 #define FM801_PAUSE		(1<<6)
122 #define FM801_IMMED_STOP	(1<<7)
123 #define FM801_RATE_SHIFT	8
124 #define FM801_RATE_MASK		(15 << FM801_RATE_SHIFT)
125 #define FM801_CHANNELS_4	(1<<12)	/* playback only */
126 #define FM801_CHANNELS_6	(2<<12)	/* playback only */
127 #define FM801_CHANNELS_6MS	(3<<12)	/* playback only */
128 #define FM801_CHANNELS_MASK	(3<<12)
129 #define FM801_16BIT		(1<<14)
130 #define FM801_STEREO		(1<<15)
131 
132 /* IRQ status bits */
133 #define FM801_IRQ_PLAYBACK	(1<<8)
134 #define FM801_IRQ_CAPTURE	(1<<9)
135 #define FM801_IRQ_VOLUME	(1<<14)
136 #define FM801_IRQ_MPU		(1<<15)
137 
138 /* GPIO control register */
139 #define FM801_GPIO_GP0		(1<<0)	/* read/write */
140 #define FM801_GPIO_GP1		(1<<1)
141 #define FM801_GPIO_GP2		(1<<2)
142 #define FM801_GPIO_GP3		(1<<3)
143 #define FM801_GPIO_GP(x)	(1<<(0+(x)))
144 #define FM801_GPIO_GD0		(1<<8)	/* directions: 1 = input, 0 = output*/
145 #define FM801_GPIO_GD1		(1<<9)
146 #define FM801_GPIO_GD2		(1<<10)
147 #define FM801_GPIO_GD3		(1<<11)
148 #define FM801_GPIO_GD(x)	(1<<(8+(x)))
149 #define FM801_GPIO_GS0		(1<<12)	/* function select: */
150 #define FM801_GPIO_GS1		(1<<13)	/*    1 = GPIO */
151 #define FM801_GPIO_GS2		(1<<14)	/*    0 = other (S/PDIF, VOL) */
152 #define FM801_GPIO_GS3		(1<<15)
153 #define FM801_GPIO_GS(x)	(1<<(12+(x)))
154 
155 /**
156  * struct fm801 - describes FM801 chip
157  * @port:		I/O port number
158  * @multichannel:	multichannel support
159  * @secondary:		secondary codec
160  * @secondary_addr:	address of the secondary codec
161  * @tea575x_tuner:	tuner access method & flags
162  * @ply_ctrl:		playback control
163  * @cap_ctrl:		capture control
164  */
165 struct fm801 {
166 	struct device *dev;
167 	int irq;
168 
169 	unsigned long port;
170 	unsigned int multichannel: 1,
171 		     secondary: 1;
172 	unsigned char secondary_addr;
173 	unsigned int tea575x_tuner;
174 
175 	unsigned short ply_ctrl;
176 	unsigned short cap_ctrl;
177 
178 	unsigned long ply_buffer;
179 	unsigned int ply_buf;
180 	unsigned int ply_count;
181 	unsigned int ply_size;
182 	unsigned int ply_pos;
183 
184 	unsigned long cap_buffer;
185 	unsigned int cap_buf;
186 	unsigned int cap_count;
187 	unsigned int cap_size;
188 	unsigned int cap_pos;
189 
190 	struct snd_ac97_bus *ac97_bus;
191 	struct snd_ac97 *ac97;
192 	struct snd_ac97 *ac97_sec;
193 
194 	struct snd_card *card;
195 	struct snd_pcm *pcm;
196 	struct snd_rawmidi *rmidi;
197 	struct snd_pcm_substream *playback_substream;
198 	struct snd_pcm_substream *capture_substream;
199 	unsigned int p_dma_size;
200 	unsigned int c_dma_size;
201 
202 	spinlock_t reg_lock;
203 	struct snd_info_entry *proc_entry;
204 
205 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
206 	struct v4l2_device v4l2_dev;
207 	struct snd_tea575x tea;
208 #endif
209 
210 #ifdef CONFIG_PM_SLEEP
211 	u16 saved_regs[0x20];
212 #endif
213 };
214 
215 /*
216  * IO accessors
217  */
218 
219 static inline void fm801_iowrite16(struct fm801 *chip, unsigned short offset, u16 value)
220 {
221 	outw(value, chip->port + offset);
222 }
223 
224 static inline u16 fm801_ioread16(struct fm801 *chip, unsigned short offset)
225 {
226 	return inw(chip->port + offset);
227 }
228 
229 static const struct pci_device_id snd_fm801_ids[] = {
230 	{ 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* FM801 */
231 	{ 0x5213, 0x0510, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* Gallant Odyssey Sound 4 */
232 	{ 0, }
233 };
234 
235 MODULE_DEVICE_TABLE(pci, snd_fm801_ids);
236 
237 /*
238  *  common I/O routines
239  */
240 
241 static bool fm801_ac97_is_ready(struct fm801 *chip, unsigned int iterations)
242 {
243 	unsigned int idx;
244 
245 	for (idx = 0; idx < iterations; idx++) {
246 		if (!(fm801_readw(chip, AC97_CMD) & FM801_AC97_BUSY))
247 			return true;
248 		udelay(10);
249 	}
250 	return false;
251 }
252 
253 static bool fm801_ac97_is_valid(struct fm801 *chip, unsigned int iterations)
254 {
255 	unsigned int idx;
256 
257 	for (idx = 0; idx < iterations; idx++) {
258 		if (fm801_readw(chip, AC97_CMD) & FM801_AC97_VALID)
259 			return true;
260 		udelay(10);
261 	}
262 	return false;
263 }
264 
265 static int snd_fm801_update_bits(struct fm801 *chip, unsigned short reg,
266 				 unsigned short mask, unsigned short value)
267 {
268 	int change;
269 	unsigned long flags;
270 	unsigned short old, new;
271 
272 	spin_lock_irqsave(&chip->reg_lock, flags);
273 	old = fm801_ioread16(chip, reg);
274 	new = (old & ~mask) | value;
275 	change = old != new;
276 	if (change)
277 		fm801_iowrite16(chip, reg, new);
278 	spin_unlock_irqrestore(&chip->reg_lock, flags);
279 	return change;
280 }
281 
282 static void snd_fm801_codec_write(struct snd_ac97 *ac97,
283 				  unsigned short reg,
284 				  unsigned short val)
285 {
286 	struct fm801 *chip = ac97->private_data;
287 
288 	/*
289 	 *  Wait until the codec interface is not ready..
290 	 */
291 	if (!fm801_ac97_is_ready(chip, 100)) {
292 		dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
293 		return;
294 	}
295 
296 	/* write data and address */
297 	fm801_writew(chip, AC97_DATA, val);
298 	fm801_writew(chip, AC97_CMD, reg | (ac97->addr << FM801_AC97_ADDR_SHIFT));
299 	/*
300 	 *  Wait until the write command is not completed..
301 	 */
302 	if (!fm801_ac97_is_ready(chip, 1000))
303 		dev_err(chip->card->dev, "AC'97 interface #%d is busy (2)\n",
304 		ac97->num);
305 }
306 
307 static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short reg)
308 {
309 	struct fm801 *chip = ac97->private_data;
310 
311 	/*
312 	 *  Wait until the codec interface is not ready..
313 	 */
314 	if (!fm801_ac97_is_ready(chip, 100)) {
315 		dev_err(chip->card->dev, "AC'97 interface is busy (1)\n");
316 		return 0;
317 	}
318 
319 	/* read command */
320 	fm801_writew(chip, AC97_CMD,
321 		     reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
322 	if (!fm801_ac97_is_ready(chip, 100)) {
323 		dev_err(chip->card->dev, "AC'97 interface #%d is busy (2)\n",
324 			ac97->num);
325 		return 0;
326 	}
327 
328 	if (!fm801_ac97_is_valid(chip, 1000)) {
329 		dev_err(chip->card->dev,
330 			"AC'97 interface #%d is not valid (2)\n", ac97->num);
331 		return 0;
332 	}
333 
334 	return fm801_readw(chip, AC97_DATA);
335 }
336 
337 static const unsigned int rates[] = {
338   5500,  8000,  9600, 11025,
339   16000, 19200, 22050, 32000,
340   38400, 44100, 48000
341 };
342 
343 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
344 	.count = ARRAY_SIZE(rates),
345 	.list = rates,
346 	.mask = 0,
347 };
348 
349 static const unsigned int channels[] = {
350   2, 4, 6
351 };
352 
353 static const struct snd_pcm_hw_constraint_list hw_constraints_channels = {
354 	.count = ARRAY_SIZE(channels),
355 	.list = channels,
356 	.mask = 0,
357 };
358 
359 /*
360  *  Sample rate routines
361  */
362 
363 static unsigned short snd_fm801_rate_bits(unsigned int rate)
364 {
365 	unsigned int idx;
366 
367 	for (idx = 0; idx < ARRAY_SIZE(rates); idx++)
368 		if (rates[idx] == rate)
369 			return idx;
370 	snd_BUG();
371 	return ARRAY_SIZE(rates) - 1;
372 }
373 
374 /*
375  *  PCM part
376  */
377 
378 static int snd_fm801_playback_trigger(struct snd_pcm_substream *substream,
379 				      int cmd)
380 {
381 	struct fm801 *chip = snd_pcm_substream_chip(substream);
382 
383 	spin_lock(&chip->reg_lock);
384 	switch (cmd) {
385 	case SNDRV_PCM_TRIGGER_START:
386 		chip->ply_ctrl &= ~(FM801_BUF1_LAST |
387 				     FM801_BUF2_LAST |
388 				     FM801_PAUSE);
389 		chip->ply_ctrl |= FM801_START |
390 				   FM801_IMMED_STOP;
391 		break;
392 	case SNDRV_PCM_TRIGGER_STOP:
393 		chip->ply_ctrl &= ~(FM801_START | FM801_PAUSE);
394 		break;
395 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
396 	case SNDRV_PCM_TRIGGER_SUSPEND:
397 		chip->ply_ctrl |= FM801_PAUSE;
398 		break;
399 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
400 	case SNDRV_PCM_TRIGGER_RESUME:
401 		chip->ply_ctrl &= ~FM801_PAUSE;
402 		break;
403 	default:
404 		spin_unlock(&chip->reg_lock);
405 		snd_BUG();
406 		return -EINVAL;
407 	}
408 	fm801_writew(chip, PLY_CTRL, chip->ply_ctrl);
409 	spin_unlock(&chip->reg_lock);
410 	return 0;
411 }
412 
413 static int snd_fm801_capture_trigger(struct snd_pcm_substream *substream,
414 				     int cmd)
415 {
416 	struct fm801 *chip = snd_pcm_substream_chip(substream);
417 
418 	spin_lock(&chip->reg_lock);
419 	switch (cmd) {
420 	case SNDRV_PCM_TRIGGER_START:
421 		chip->cap_ctrl &= ~(FM801_BUF1_LAST |
422 				     FM801_BUF2_LAST |
423 				     FM801_PAUSE);
424 		chip->cap_ctrl |= FM801_START |
425 				   FM801_IMMED_STOP;
426 		break;
427 	case SNDRV_PCM_TRIGGER_STOP:
428 		chip->cap_ctrl &= ~(FM801_START | FM801_PAUSE);
429 		break;
430 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
431 	case SNDRV_PCM_TRIGGER_SUSPEND:
432 		chip->cap_ctrl |= FM801_PAUSE;
433 		break;
434 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
435 	case SNDRV_PCM_TRIGGER_RESUME:
436 		chip->cap_ctrl &= ~FM801_PAUSE;
437 		break;
438 	default:
439 		spin_unlock(&chip->reg_lock);
440 		snd_BUG();
441 		return -EINVAL;
442 	}
443 	fm801_writew(chip, CAP_CTRL, chip->cap_ctrl);
444 	spin_unlock(&chip->reg_lock);
445 	return 0;
446 }
447 
448 static int snd_fm801_hw_params(struct snd_pcm_substream *substream,
449 			       struct snd_pcm_hw_params *hw_params)
450 {
451 	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
452 }
453 
454 static int snd_fm801_hw_free(struct snd_pcm_substream *substream)
455 {
456 	return snd_pcm_lib_free_pages(substream);
457 }
458 
459 static int snd_fm801_playback_prepare(struct snd_pcm_substream *substream)
460 {
461 	struct fm801 *chip = snd_pcm_substream_chip(substream);
462 	struct snd_pcm_runtime *runtime = substream->runtime;
463 
464 	chip->ply_size = snd_pcm_lib_buffer_bytes(substream);
465 	chip->ply_count = snd_pcm_lib_period_bytes(substream);
466 	spin_lock_irq(&chip->reg_lock);
467 	chip->ply_ctrl &= ~(FM801_START | FM801_16BIT |
468 			     FM801_STEREO | FM801_RATE_MASK |
469 			     FM801_CHANNELS_MASK);
470 	if (snd_pcm_format_width(runtime->format) == 16)
471 		chip->ply_ctrl |= FM801_16BIT;
472 	if (runtime->channels > 1) {
473 		chip->ply_ctrl |= FM801_STEREO;
474 		if (runtime->channels == 4)
475 			chip->ply_ctrl |= FM801_CHANNELS_4;
476 		else if (runtime->channels == 6)
477 			chip->ply_ctrl |= FM801_CHANNELS_6;
478 	}
479 	chip->ply_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
480 	chip->ply_buf = 0;
481 	fm801_writew(chip, PLY_CTRL, chip->ply_ctrl);
482 	fm801_writew(chip, PLY_COUNT, chip->ply_count - 1);
483 	chip->ply_buffer = runtime->dma_addr;
484 	chip->ply_pos = 0;
485 	fm801_writel(chip, PLY_BUF1, chip->ply_buffer);
486 	fm801_writel(chip, PLY_BUF2,
487 		     chip->ply_buffer + (chip->ply_count % chip->ply_size));
488 	spin_unlock_irq(&chip->reg_lock);
489 	return 0;
490 }
491 
492 static int snd_fm801_capture_prepare(struct snd_pcm_substream *substream)
493 {
494 	struct fm801 *chip = snd_pcm_substream_chip(substream);
495 	struct snd_pcm_runtime *runtime = substream->runtime;
496 
497 	chip->cap_size = snd_pcm_lib_buffer_bytes(substream);
498 	chip->cap_count = snd_pcm_lib_period_bytes(substream);
499 	spin_lock_irq(&chip->reg_lock);
500 	chip->cap_ctrl &= ~(FM801_START | FM801_16BIT |
501 			     FM801_STEREO | FM801_RATE_MASK);
502 	if (snd_pcm_format_width(runtime->format) == 16)
503 		chip->cap_ctrl |= FM801_16BIT;
504 	if (runtime->channels > 1)
505 		chip->cap_ctrl |= FM801_STEREO;
506 	chip->cap_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
507 	chip->cap_buf = 0;
508 	fm801_writew(chip, CAP_CTRL, chip->cap_ctrl);
509 	fm801_writew(chip, CAP_COUNT, chip->cap_count - 1);
510 	chip->cap_buffer = runtime->dma_addr;
511 	chip->cap_pos = 0;
512 	fm801_writel(chip, CAP_BUF1, chip->cap_buffer);
513 	fm801_writel(chip, CAP_BUF2,
514 		     chip->cap_buffer + (chip->cap_count % chip->cap_size));
515 	spin_unlock_irq(&chip->reg_lock);
516 	return 0;
517 }
518 
519 static snd_pcm_uframes_t snd_fm801_playback_pointer(struct snd_pcm_substream *substream)
520 {
521 	struct fm801 *chip = snd_pcm_substream_chip(substream);
522 	size_t ptr;
523 
524 	if (!(chip->ply_ctrl & FM801_START))
525 		return 0;
526 	spin_lock(&chip->reg_lock);
527 	ptr = chip->ply_pos + (chip->ply_count - 1) - fm801_readw(chip, PLY_COUNT);
528 	if (fm801_readw(chip, IRQ_STATUS) & FM801_IRQ_PLAYBACK) {
529 		ptr += chip->ply_count;
530 		ptr %= chip->ply_size;
531 	}
532 	spin_unlock(&chip->reg_lock);
533 	return bytes_to_frames(substream->runtime, ptr);
534 }
535 
536 static snd_pcm_uframes_t snd_fm801_capture_pointer(struct snd_pcm_substream *substream)
537 {
538 	struct fm801 *chip = snd_pcm_substream_chip(substream);
539 	size_t ptr;
540 
541 	if (!(chip->cap_ctrl & FM801_START))
542 		return 0;
543 	spin_lock(&chip->reg_lock);
544 	ptr = chip->cap_pos + (chip->cap_count - 1) - fm801_readw(chip, CAP_COUNT);
545 	if (fm801_readw(chip, IRQ_STATUS) & FM801_IRQ_CAPTURE) {
546 		ptr += chip->cap_count;
547 		ptr %= chip->cap_size;
548 	}
549 	spin_unlock(&chip->reg_lock);
550 	return bytes_to_frames(substream->runtime, ptr);
551 }
552 
553 static irqreturn_t snd_fm801_interrupt(int irq, void *dev_id)
554 {
555 	struct fm801 *chip = dev_id;
556 	unsigned short status;
557 	unsigned int tmp;
558 
559 	status = fm801_readw(chip, IRQ_STATUS);
560 	status &= FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU|FM801_IRQ_VOLUME;
561 	if (! status)
562 		return IRQ_NONE;
563 	/* ack first */
564 	fm801_writew(chip, IRQ_STATUS, status);
565 	if (chip->pcm && (status & FM801_IRQ_PLAYBACK) && chip->playback_substream) {
566 		spin_lock(&chip->reg_lock);
567 		chip->ply_buf++;
568 		chip->ply_pos += chip->ply_count;
569 		chip->ply_pos %= chip->ply_size;
570 		tmp = chip->ply_pos + chip->ply_count;
571 		tmp %= chip->ply_size;
572 		if (chip->ply_buf & 1)
573 			fm801_writel(chip, PLY_BUF1, chip->ply_buffer + tmp);
574 		else
575 			fm801_writel(chip, PLY_BUF2, chip->ply_buffer + tmp);
576 		spin_unlock(&chip->reg_lock);
577 		snd_pcm_period_elapsed(chip->playback_substream);
578 	}
579 	if (chip->pcm && (status & FM801_IRQ_CAPTURE) && chip->capture_substream) {
580 		spin_lock(&chip->reg_lock);
581 		chip->cap_buf++;
582 		chip->cap_pos += chip->cap_count;
583 		chip->cap_pos %= chip->cap_size;
584 		tmp = chip->cap_pos + chip->cap_count;
585 		tmp %= chip->cap_size;
586 		if (chip->cap_buf & 1)
587 			fm801_writel(chip, CAP_BUF1, chip->cap_buffer + tmp);
588 		else
589 			fm801_writel(chip, CAP_BUF2, chip->cap_buffer + tmp);
590 		spin_unlock(&chip->reg_lock);
591 		snd_pcm_period_elapsed(chip->capture_substream);
592 	}
593 	if (chip->rmidi && (status & FM801_IRQ_MPU))
594 		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
595 	if (status & FM801_IRQ_VOLUME) {
596 		/* TODO */
597 	}
598 
599 	return IRQ_HANDLED;
600 }
601 
602 static const struct snd_pcm_hardware snd_fm801_playback =
603 {
604 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
605 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
606 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
607 				 SNDRV_PCM_INFO_MMAP_VALID),
608 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
609 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
610 	.rate_min =		5500,
611 	.rate_max =		48000,
612 	.channels_min =		1,
613 	.channels_max =		2,
614 	.buffer_bytes_max =	(128*1024),
615 	.period_bytes_min =	64,
616 	.period_bytes_max =	(128*1024),
617 	.periods_min =		1,
618 	.periods_max =		1024,
619 	.fifo_size =		0,
620 };
621 
622 static const struct snd_pcm_hardware snd_fm801_capture =
623 {
624 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
625 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
626 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
627 				 SNDRV_PCM_INFO_MMAP_VALID),
628 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
629 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
630 	.rate_min =		5500,
631 	.rate_max =		48000,
632 	.channels_min =		1,
633 	.channels_max =		2,
634 	.buffer_bytes_max =	(128*1024),
635 	.period_bytes_min =	64,
636 	.period_bytes_max =	(128*1024),
637 	.periods_min =		1,
638 	.periods_max =		1024,
639 	.fifo_size =		0,
640 };
641 
642 static int snd_fm801_playback_open(struct snd_pcm_substream *substream)
643 {
644 	struct fm801 *chip = snd_pcm_substream_chip(substream);
645 	struct snd_pcm_runtime *runtime = substream->runtime;
646 	int err;
647 
648 	chip->playback_substream = substream;
649 	runtime->hw = snd_fm801_playback;
650 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
651 				   &hw_constraints_rates);
652 	if (chip->multichannel) {
653 		runtime->hw.channels_max = 6;
654 		snd_pcm_hw_constraint_list(runtime, 0,
655 					   SNDRV_PCM_HW_PARAM_CHANNELS,
656 					   &hw_constraints_channels);
657 	}
658 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
659 		return err;
660 	return 0;
661 }
662 
663 static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
664 {
665 	struct fm801 *chip = snd_pcm_substream_chip(substream);
666 	struct snd_pcm_runtime *runtime = substream->runtime;
667 	int err;
668 
669 	chip->capture_substream = substream;
670 	runtime->hw = snd_fm801_capture;
671 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
672 				   &hw_constraints_rates);
673 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
674 		return err;
675 	return 0;
676 }
677 
678 static int snd_fm801_playback_close(struct snd_pcm_substream *substream)
679 {
680 	struct fm801 *chip = snd_pcm_substream_chip(substream);
681 
682 	chip->playback_substream = NULL;
683 	return 0;
684 }
685 
686 static int snd_fm801_capture_close(struct snd_pcm_substream *substream)
687 {
688 	struct fm801 *chip = snd_pcm_substream_chip(substream);
689 
690 	chip->capture_substream = NULL;
691 	return 0;
692 }
693 
694 static const struct snd_pcm_ops snd_fm801_playback_ops = {
695 	.open =		snd_fm801_playback_open,
696 	.close =	snd_fm801_playback_close,
697 	.ioctl =	snd_pcm_lib_ioctl,
698 	.hw_params =	snd_fm801_hw_params,
699 	.hw_free =	snd_fm801_hw_free,
700 	.prepare =	snd_fm801_playback_prepare,
701 	.trigger =	snd_fm801_playback_trigger,
702 	.pointer =	snd_fm801_playback_pointer,
703 };
704 
705 static const struct snd_pcm_ops snd_fm801_capture_ops = {
706 	.open =		snd_fm801_capture_open,
707 	.close =	snd_fm801_capture_close,
708 	.ioctl =	snd_pcm_lib_ioctl,
709 	.hw_params =	snd_fm801_hw_params,
710 	.hw_free =	snd_fm801_hw_free,
711 	.prepare =	snd_fm801_capture_prepare,
712 	.trigger =	snd_fm801_capture_trigger,
713 	.pointer =	snd_fm801_capture_pointer,
714 };
715 
716 static int snd_fm801_pcm(struct fm801 *chip, int device)
717 {
718 	struct pci_dev *pdev = to_pci_dev(chip->dev);
719 	struct snd_pcm *pcm;
720 	int err;
721 
722 	if ((err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm)) < 0)
723 		return err;
724 
725 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_fm801_playback_ops);
726 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_fm801_capture_ops);
727 
728 	pcm->private_data = chip;
729 	pcm->info_flags = 0;
730 	strcpy(pcm->name, "FM801");
731 	chip->pcm = pcm;
732 
733 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
734 					      snd_dma_pci_data(pdev),
735 					      chip->multichannel ? 128*1024 : 64*1024, 128*1024);
736 
737 	return snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
738 				     snd_pcm_alt_chmaps,
739 				     chip->multichannel ? 6 : 2, 0,
740 				     NULL);
741 }
742 
743 /*
744  *  TEA5757 radio
745  */
746 
747 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
748 
749 /* GPIO to TEA575x maps */
750 struct snd_fm801_tea575x_gpio {
751 	u8 data, clk, wren, most;
752 	char *name;
753 };
754 
755 static struct snd_fm801_tea575x_gpio snd_fm801_tea575x_gpios[] = {
756 	{ .data = 1, .clk = 3, .wren = 2, .most = 0, .name = "SF256-PCS" },
757 	{ .data = 1, .clk = 0, .wren = 2, .most = 3, .name = "SF256-PCP" },
758 	{ .data = 2, .clk = 0, .wren = 1, .most = 3, .name = "SF64-PCR" },
759 };
760 
761 #define get_tea575x_gpio(chip) \
762 	(&snd_fm801_tea575x_gpios[((chip)->tea575x_tuner & TUNER_TYPE_MASK) - 1])
763 
764 static void snd_fm801_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
765 {
766 	struct fm801 *chip = tea->private_data;
767 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
768 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
769 
770 	reg &= ~(FM801_GPIO_GP(gpio.data) |
771 		 FM801_GPIO_GP(gpio.clk) |
772 		 FM801_GPIO_GP(gpio.wren));
773 
774 	reg |= (pins & TEA575X_DATA) ? FM801_GPIO_GP(gpio.data) : 0;
775 	reg |= (pins & TEA575X_CLK)  ? FM801_GPIO_GP(gpio.clk) : 0;
776 	/* WRITE_ENABLE is inverted */
777 	reg |= (pins & TEA575X_WREN) ? 0 : FM801_GPIO_GP(gpio.wren);
778 
779 	fm801_writew(chip, GPIO_CTRL, reg);
780 }
781 
782 static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
783 {
784 	struct fm801 *chip = tea->private_data;
785 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
786 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
787 	u8 ret;
788 
789 	ret = 0;
790 	if (reg & FM801_GPIO_GP(gpio.data))
791 		ret |= TEA575X_DATA;
792 	if (reg & FM801_GPIO_GP(gpio.most))
793 		ret |= TEA575X_MOST;
794 	return ret;
795 }
796 
797 static void snd_fm801_tea575x_set_direction(struct snd_tea575x *tea, bool output)
798 {
799 	struct fm801 *chip = tea->private_data;
800 	unsigned short reg = fm801_readw(chip, GPIO_CTRL);
801 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
802 
803 	/* use GPIO lines and set write enable bit */
804 	reg |= FM801_GPIO_GS(gpio.data) |
805 	       FM801_GPIO_GS(gpio.wren) |
806 	       FM801_GPIO_GS(gpio.clk) |
807 	       FM801_GPIO_GS(gpio.most);
808 	if (output) {
809 		/* all of lines are in the write direction */
810 		/* clear data and clock lines */
811 		reg &= ~(FM801_GPIO_GD(gpio.data) |
812 			 FM801_GPIO_GD(gpio.wren) |
813 			 FM801_GPIO_GD(gpio.clk) |
814 			 FM801_GPIO_GP(gpio.data) |
815 			 FM801_GPIO_GP(gpio.clk) |
816 			 FM801_GPIO_GP(gpio.wren));
817 	} else {
818 		/* use GPIO lines, set data direction to input */
819 		reg |= FM801_GPIO_GD(gpio.data) |
820 		       FM801_GPIO_GD(gpio.most) |
821 		       FM801_GPIO_GP(gpio.data) |
822 		       FM801_GPIO_GP(gpio.most) |
823 		       FM801_GPIO_GP(gpio.wren);
824 		/* all of lines are in the write direction, except data */
825 		/* clear data, write enable and clock lines */
826 		reg &= ~(FM801_GPIO_GD(gpio.wren) |
827 			 FM801_GPIO_GD(gpio.clk) |
828 			 FM801_GPIO_GP(gpio.clk));
829 	}
830 
831 	fm801_writew(chip, GPIO_CTRL, reg);
832 }
833 
834 static const struct snd_tea575x_ops snd_fm801_tea_ops = {
835 	.set_pins = snd_fm801_tea575x_set_pins,
836 	.get_pins = snd_fm801_tea575x_get_pins,
837 	.set_direction = snd_fm801_tea575x_set_direction,
838 };
839 #endif
840 
841 /*
842  *  Mixer routines
843  */
844 
845 #define FM801_SINGLE(xname, reg, shift, mask, invert) \
846 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_single, \
847   .get = snd_fm801_get_single, .put = snd_fm801_put_single, \
848   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
849 
850 static int snd_fm801_info_single(struct snd_kcontrol *kcontrol,
851 				 struct snd_ctl_elem_info *uinfo)
852 {
853 	int mask = (kcontrol->private_value >> 16) & 0xff;
854 
855 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
856 	uinfo->count = 1;
857 	uinfo->value.integer.min = 0;
858 	uinfo->value.integer.max = mask;
859 	return 0;
860 }
861 
862 static int snd_fm801_get_single(struct snd_kcontrol *kcontrol,
863 				struct snd_ctl_elem_value *ucontrol)
864 {
865 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
866 	int reg = kcontrol->private_value & 0xff;
867 	int shift = (kcontrol->private_value >> 8) & 0xff;
868 	int mask = (kcontrol->private_value >> 16) & 0xff;
869 	int invert = (kcontrol->private_value >> 24) & 0xff;
870 	long *value = ucontrol->value.integer.value;
871 
872 	value[0] = (fm801_ioread16(chip, reg) >> shift) & mask;
873 	if (invert)
874 		value[0] = mask - value[0];
875 	return 0;
876 }
877 
878 static int snd_fm801_put_single(struct snd_kcontrol *kcontrol,
879 				struct snd_ctl_elem_value *ucontrol)
880 {
881 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
882 	int reg = kcontrol->private_value & 0xff;
883 	int shift = (kcontrol->private_value >> 8) & 0xff;
884 	int mask = (kcontrol->private_value >> 16) & 0xff;
885 	int invert = (kcontrol->private_value >> 24) & 0xff;
886 	unsigned short val;
887 
888 	val = (ucontrol->value.integer.value[0] & mask);
889 	if (invert)
890 		val = mask - val;
891 	return snd_fm801_update_bits(chip, reg, mask << shift, val << shift);
892 }
893 
894 #define FM801_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
895 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_double, \
896   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
897   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
898 #define FM801_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
899 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
900   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
901   .name = xname, .info = snd_fm801_info_double, \
902   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
903   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
904   .tlv = { .p = (xtlv) } }
905 
906 static int snd_fm801_info_double(struct snd_kcontrol *kcontrol,
907 				 struct snd_ctl_elem_info *uinfo)
908 {
909 	int mask = (kcontrol->private_value >> 16) & 0xff;
910 
911 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
912 	uinfo->count = 2;
913 	uinfo->value.integer.min = 0;
914 	uinfo->value.integer.max = mask;
915 	return 0;
916 }
917 
918 static int snd_fm801_get_double(struct snd_kcontrol *kcontrol,
919 				struct snd_ctl_elem_value *ucontrol)
920 {
921 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
922         int reg = kcontrol->private_value & 0xff;
923 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
924 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
925 	int mask = (kcontrol->private_value >> 16) & 0xff;
926 	int invert = (kcontrol->private_value >> 24) & 0xff;
927 	long *value = ucontrol->value.integer.value;
928 
929 	spin_lock_irq(&chip->reg_lock);
930 	value[0] = (fm801_ioread16(chip, reg) >> shift_left) & mask;
931 	value[1] = (fm801_ioread16(chip, reg) >> shift_right) & mask;
932 	spin_unlock_irq(&chip->reg_lock);
933 	if (invert) {
934 		value[0] = mask - value[0];
935 		value[1] = mask - value[1];
936 	}
937 	return 0;
938 }
939 
940 static int snd_fm801_put_double(struct snd_kcontrol *kcontrol,
941 				struct snd_ctl_elem_value *ucontrol)
942 {
943 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
944 	int reg = kcontrol->private_value & 0xff;
945 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
946 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
947 	int mask = (kcontrol->private_value >> 16) & 0xff;
948 	int invert = (kcontrol->private_value >> 24) & 0xff;
949 	unsigned short val1, val2;
950 
951 	val1 = ucontrol->value.integer.value[0] & mask;
952 	val2 = ucontrol->value.integer.value[1] & mask;
953 	if (invert) {
954 		val1 = mask - val1;
955 		val2 = mask - val2;
956 	}
957 	return snd_fm801_update_bits(chip, reg,
958 				     (mask << shift_left) | (mask << shift_right),
959 				     (val1 << shift_left ) | (val2 << shift_right));
960 }
961 
962 static int snd_fm801_info_mux(struct snd_kcontrol *kcontrol,
963 			      struct snd_ctl_elem_info *uinfo)
964 {
965 	static const char * const texts[5] = {
966 		"AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
967 	};
968 
969 	return snd_ctl_enum_info(uinfo, 1, 5, texts);
970 }
971 
972 static int snd_fm801_get_mux(struct snd_kcontrol *kcontrol,
973 			     struct snd_ctl_elem_value *ucontrol)
974 {
975 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
976         unsigned short val;
977 
978 	val = fm801_readw(chip, REC_SRC) & 7;
979 	if (val > 4)
980 		val = 4;
981         ucontrol->value.enumerated.item[0] = val;
982         return 0;
983 }
984 
985 static int snd_fm801_put_mux(struct snd_kcontrol *kcontrol,
986 			     struct snd_ctl_elem_value *ucontrol)
987 {
988 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
989         unsigned short val;
990 
991         if ((val = ucontrol->value.enumerated.item[0]) > 4)
992                 return -EINVAL;
993 	return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
994 }
995 
996 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -3450, 150, 0);
997 
998 #define FM801_CONTROLS ARRAY_SIZE(snd_fm801_controls)
999 
1000 static struct snd_kcontrol_new snd_fm801_controls[] = {
1001 FM801_DOUBLE_TLV("Wave Playback Volume", FM801_PCM_VOL, 0, 8, 31, 1,
1002 		 db_scale_dsp),
1003 FM801_SINGLE("Wave Playback Switch", FM801_PCM_VOL, 15, 1, 1),
1004 FM801_DOUBLE_TLV("I2S Playback Volume", FM801_I2S_VOL, 0, 8, 31, 1,
1005 		 db_scale_dsp),
1006 FM801_SINGLE("I2S Playback Switch", FM801_I2S_VOL, 15, 1, 1),
1007 FM801_DOUBLE_TLV("FM Playback Volume", FM801_FM_VOL, 0, 8, 31, 1,
1008 		 db_scale_dsp),
1009 FM801_SINGLE("FM Playback Switch", FM801_FM_VOL, 15, 1, 1),
1010 {
1011 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1012 	.name = "Digital Capture Source",
1013 	.info = snd_fm801_info_mux,
1014 	.get = snd_fm801_get_mux,
1015 	.put = snd_fm801_put_mux,
1016 }
1017 };
1018 
1019 #define FM801_CONTROLS_MULTI ARRAY_SIZE(snd_fm801_controls_multi)
1020 
1021 static struct snd_kcontrol_new snd_fm801_controls_multi[] = {
1022 FM801_SINGLE("AC97 2ch->4ch Copy Switch", FM801_CODEC_CTRL, 7, 1, 0),
1023 FM801_SINGLE("AC97 18-bit Switch", FM801_CODEC_CTRL, 10, 1, 0),
1024 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), FM801_I2S_MODE, 8, 1, 0),
1025 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",PLAYBACK,SWITCH), FM801_I2S_MODE, 9, 1, 0),
1026 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",CAPTURE,SWITCH), FM801_I2S_MODE, 10, 1, 0),
1027 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), FM801_GEN_CTRL, 2, 1, 0),
1028 };
1029 
1030 static void snd_fm801_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1031 {
1032 	struct fm801 *chip = bus->private_data;
1033 	chip->ac97_bus = NULL;
1034 }
1035 
1036 static void snd_fm801_mixer_free_ac97(struct snd_ac97 *ac97)
1037 {
1038 	struct fm801 *chip = ac97->private_data;
1039 	if (ac97->num == 0) {
1040 		chip->ac97 = NULL;
1041 	} else {
1042 		chip->ac97_sec = NULL;
1043 	}
1044 }
1045 
1046 static int snd_fm801_mixer(struct fm801 *chip)
1047 {
1048 	struct snd_ac97_template ac97;
1049 	unsigned int i;
1050 	int err;
1051 	static struct snd_ac97_bus_ops ops = {
1052 		.write = snd_fm801_codec_write,
1053 		.read = snd_fm801_codec_read,
1054 	};
1055 
1056 	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1057 		return err;
1058 	chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;
1059 
1060 	memset(&ac97, 0, sizeof(ac97));
1061 	ac97.private_data = chip;
1062 	ac97.private_free = snd_fm801_mixer_free_ac97;
1063 	if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1064 		return err;
1065 	if (chip->secondary) {
1066 		ac97.num = 1;
1067 		ac97.addr = chip->secondary_addr;
1068 		if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
1069 			return err;
1070 	}
1071 	for (i = 0; i < FM801_CONTROLS; i++) {
1072 		err = snd_ctl_add(chip->card,
1073 			snd_ctl_new1(&snd_fm801_controls[i], chip));
1074 		if (err < 0)
1075 			return err;
1076 	}
1077 	if (chip->multichannel) {
1078 		for (i = 0; i < FM801_CONTROLS_MULTI; i++) {
1079 			err = snd_ctl_add(chip->card,
1080 				snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
1081 			if (err < 0)
1082 				return err;
1083 		}
1084 	}
1085 	return 0;
1086 }
1087 
1088 /*
1089  *  initialization routines
1090  */
1091 
1092 static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
1093 			  unsigned short reg, unsigned long waits)
1094 {
1095 	unsigned long timeout = jiffies + waits;
1096 
1097 	fm801_writew(chip, AC97_CMD,
1098 		     reg | (codec_id << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ);
1099 	udelay(5);
1100 	do {
1101 		if ((fm801_readw(chip, AC97_CMD) &
1102 		     (FM801_AC97_VALID | FM801_AC97_BUSY)) == FM801_AC97_VALID)
1103 			return 0;
1104 		schedule_timeout_uninterruptible(1);
1105 	} while (time_after(timeout, jiffies));
1106 	return -EIO;
1107 }
1108 
1109 static int reset_codec(struct fm801 *chip)
1110 {
1111 	/* codec cold reset + AC'97 warm reset */
1112 	fm801_writew(chip, CODEC_CTRL, (1 << 5) | (1 << 6));
1113 	fm801_readw(chip, CODEC_CTRL); /* flush posting data */
1114 	udelay(100);
1115 	fm801_writew(chip, CODEC_CTRL, 0);
1116 
1117 	return wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750));
1118 }
1119 
1120 static void snd_fm801_chip_multichannel_init(struct fm801 *chip)
1121 {
1122 	unsigned short cmdw;
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 
1151 static void snd_fm801_chip_init(struct fm801 *chip)
1152 {
1153 	unsigned short cmdw;
1154 
1155 	/* init volume */
1156 	fm801_writew(chip, PCM_VOL, 0x0808);
1157 	fm801_writew(chip, FM_VOL, 0x9f1f);
1158 	fm801_writew(chip, I2S_VOL, 0x8808);
1159 
1160 	/* I2S control - I2S mode */
1161 	fm801_writew(chip, I2S_MODE, 0x0003);
1162 
1163 	/* interrupt setup */
1164 	cmdw = fm801_readw(chip, IRQ_MASK);
1165 	if (chip->irq < 0)
1166 		cmdw |= 0x00c3;		/* mask everything, no PCM nor MPU */
1167 	else
1168 		cmdw &= ~0x0083;	/* unmask MPU, PLAYBACK & CAPTURE */
1169 	fm801_writew(chip, IRQ_MASK, cmdw);
1170 
1171 	/* interrupt clear */
1172 	fm801_writew(chip, IRQ_STATUS,
1173 		     FM801_IRQ_PLAYBACK | FM801_IRQ_CAPTURE | FM801_IRQ_MPU);
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 	devm_free_irq(chip->dev, chip->irq, chip);
1189 
1190       __end_hw:
1191 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1192 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1193 		snd_tea575x_exit(&chip->tea);
1194 		v4l2_device_unregister(&chip->v4l2_dev);
1195 	}
1196 #endif
1197 	return 0;
1198 }
1199 
1200 static int snd_fm801_dev_free(struct snd_device *device)
1201 {
1202 	struct fm801 *chip = device->device_data;
1203 	return snd_fm801_free(chip);
1204 }
1205 
1206 static int snd_fm801_create(struct snd_card *card,
1207 			    struct pci_dev *pci,
1208 			    int tea575x_tuner,
1209 			    int radio_nr,
1210 			    struct fm801 **rchip)
1211 {
1212 	struct fm801 *chip;
1213 	int err;
1214 	static struct snd_device_ops ops = {
1215 		.dev_free =	snd_fm801_dev_free,
1216 	};
1217 
1218 	*rchip = NULL;
1219 	if ((err = pcim_enable_device(pci)) < 0)
1220 		return err;
1221 	chip = devm_kzalloc(&pci->dev, sizeof(*chip), GFP_KERNEL);
1222 	if (chip == NULL)
1223 		return -ENOMEM;
1224 	spin_lock_init(&chip->reg_lock);
1225 	chip->card = card;
1226 	chip->dev = &pci->dev;
1227 	chip->irq = -1;
1228 	chip->tea575x_tuner = tea575x_tuner;
1229 	if ((err = pci_request_regions(pci, "FM801")) < 0)
1230 		return err;
1231 	chip->port = pci_resource_start(pci, 0);
1232 
1233 	if (pci->revision >= 0xb1)	/* FM801-AU */
1234 		chip->multichannel = 1;
1235 
1236 	if (!(chip->tea575x_tuner & TUNER_ONLY)) {
1237 		if (reset_codec(chip) < 0) {
1238 			dev_info(chip->card->dev,
1239 				 "Primary AC'97 codec not found, assume SF64-PCR (tuner-only)\n");
1240 			chip->tea575x_tuner = 3 | TUNER_ONLY;
1241 		} else {
1242 			snd_fm801_chip_multichannel_init(chip);
1243 		}
1244 	}
1245 
1246 	if ((chip->tea575x_tuner & TUNER_ONLY) == 0) {
1247 		if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
1248 				IRQF_SHARED, KBUILD_MODNAME, chip)) {
1249 			dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1250 			snd_fm801_free(chip);
1251 			return -EBUSY;
1252 		}
1253 		chip->irq = pci->irq;
1254 		pci_set_master(pci);
1255 	}
1256 
1257 	snd_fm801_chip_init(chip);
1258 
1259 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1260 		snd_fm801_free(chip);
1261 		return err;
1262 	}
1263 
1264 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1265 	err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
1266 	if (err < 0) {
1267 		snd_fm801_free(chip);
1268 		return err;
1269 	}
1270 	chip->tea.v4l2_dev = &chip->v4l2_dev;
1271 	chip->tea.radio_nr = radio_nr;
1272 	chip->tea.private_data = chip;
1273 	chip->tea.ops = &snd_fm801_tea_ops;
1274 	sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
1275 	if ((chip->tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
1276 	    (chip->tea575x_tuner & TUNER_TYPE_MASK) < 4) {
1277 		if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1278 			dev_err(card->dev, "TEA575x radio not found\n");
1279 			snd_fm801_free(chip);
1280 			return -ENODEV;
1281 		}
1282 	} else if ((chip->tea575x_tuner & TUNER_TYPE_MASK) == 0) {
1283 		unsigned int tuner_only = chip->tea575x_tuner & TUNER_ONLY;
1284 
1285 		/* autodetect tuner connection */
1286 		for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
1287 			chip->tea575x_tuner = tea575x_tuner;
1288 			if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1289 				dev_info(card->dev,
1290 					 "detected TEA575x radio type %s\n",
1291 					   get_tea575x_gpio(chip)->name);
1292 				break;
1293 			}
1294 		}
1295 		if (tea575x_tuner == 4) {
1296 			dev_err(card->dev, "TEA575x radio not found\n");
1297 			chip->tea575x_tuner = TUNER_DISABLED;
1298 		}
1299 
1300 		chip->tea575x_tuner |= tuner_only;
1301 	}
1302 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1303 		strlcpy(chip->tea.card, get_tea575x_gpio(chip)->name,
1304 			sizeof(chip->tea.card));
1305 	}
1306 #endif
1307 
1308 	*rchip = chip;
1309 	return 0;
1310 }
1311 
1312 static int snd_card_fm801_probe(struct pci_dev *pci,
1313 				const struct pci_device_id *pci_id)
1314 {
1315 	static int dev;
1316 	struct snd_card *card;
1317 	struct fm801 *chip;
1318 	struct snd_opl3 *opl3;
1319 	int err;
1320 
1321         if (dev >= SNDRV_CARDS)
1322                 return -ENODEV;
1323 	if (!enable[dev]) {
1324 		dev++;
1325 		return -ENOENT;
1326 	}
1327 
1328 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1329 			   0, &card);
1330 	if (err < 0)
1331 		return err;
1332 	if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev], &chip)) < 0) {
1333 		snd_card_free(card);
1334 		return err;
1335 	}
1336 	card->private_data = chip;
1337 
1338 	strcpy(card->driver, "FM801");
1339 	strcpy(card->shortname, "ForteMedia FM801-");
1340 	strcat(card->shortname, chip->multichannel ? "AU" : "AS");
1341 	sprintf(card->longname, "%s at 0x%lx, irq %i",
1342 		card->shortname, chip->port, chip->irq);
1343 
1344 	if (chip->tea575x_tuner & TUNER_ONLY)
1345 		goto __fm801_tuner_only;
1346 
1347 	if ((err = snd_fm801_pcm(chip, 0)) < 0) {
1348 		snd_card_free(card);
1349 		return err;
1350 	}
1351 	if ((err = snd_fm801_mixer(chip)) < 0) {
1352 		snd_card_free(card);
1353 		return err;
1354 	}
1355 	if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
1356 				       chip->port + FM801_MPU401_DATA,
1357 				       MPU401_INFO_INTEGRATED |
1358 				       MPU401_INFO_IRQ_HOOK,
1359 				       -1, &chip->rmidi)) < 0) {
1360 		snd_card_free(card);
1361 		return err;
1362 	}
1363 	if ((err = snd_opl3_create(card, chip->port + FM801_OPL3_BANK0,
1364 				   chip->port + FM801_OPL3_BANK1,
1365 				   OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
1366 		snd_card_free(card);
1367 		return err;
1368 	}
1369 	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1370 		snd_card_free(card);
1371 		return err;
1372 	}
1373 
1374       __fm801_tuner_only:
1375 	if ((err = snd_card_register(card)) < 0) {
1376 		snd_card_free(card);
1377 		return err;
1378 	}
1379 	pci_set_drvdata(pci, card);
1380 	dev++;
1381 	return 0;
1382 }
1383 
1384 static void snd_card_fm801_remove(struct pci_dev *pci)
1385 {
1386 	snd_card_free(pci_get_drvdata(pci));
1387 }
1388 
1389 #ifdef CONFIG_PM_SLEEP
1390 static unsigned char saved_regs[] = {
1391 	FM801_PCM_VOL, FM801_I2S_VOL, FM801_FM_VOL, FM801_REC_SRC,
1392 	FM801_PLY_CTRL, FM801_PLY_COUNT, FM801_PLY_BUF1, FM801_PLY_BUF2,
1393 	FM801_CAP_CTRL, FM801_CAP_COUNT, FM801_CAP_BUF1, FM801_CAP_BUF2,
1394 	FM801_CODEC_CTRL, FM801_I2S_MODE, FM801_VOLUME, FM801_GEN_CTRL,
1395 };
1396 
1397 static int snd_fm801_suspend(struct device *dev)
1398 {
1399 	struct snd_card *card = dev_get_drvdata(dev);
1400 	struct fm801 *chip = card->private_data;
1401 	int i;
1402 
1403 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1404 
1405 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1406 		chip->saved_regs[i] = fm801_ioread16(chip, saved_regs[i]);
1407 
1408 	if (chip->tea575x_tuner & TUNER_ONLY) {
1409 		/* FIXME: tea575x suspend */
1410 	} else {
1411 		snd_pcm_suspend_all(chip->pcm);
1412 		snd_ac97_suspend(chip->ac97);
1413 		snd_ac97_suspend(chip->ac97_sec);
1414 	}
1415 
1416 	return 0;
1417 }
1418 
1419 static int snd_fm801_resume(struct device *dev)
1420 {
1421 	struct snd_card *card = dev_get_drvdata(dev);
1422 	struct fm801 *chip = card->private_data;
1423 	int i;
1424 
1425 	if (chip->tea575x_tuner & TUNER_ONLY) {
1426 		snd_fm801_chip_init(chip);
1427 	} else {
1428 		reset_codec(chip);
1429 		snd_fm801_chip_multichannel_init(chip);
1430 		snd_fm801_chip_init(chip);
1431 		snd_ac97_resume(chip->ac97);
1432 		snd_ac97_resume(chip->ac97_sec);
1433 	}
1434 
1435 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1436 		fm801_iowrite16(chip, saved_regs[i], chip->saved_regs[i]);
1437 
1438 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1439 	if (!(chip->tea575x_tuner & TUNER_DISABLED))
1440 		snd_tea575x_set_freq(&chip->tea);
1441 #endif
1442 
1443 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1444 	return 0;
1445 }
1446 
1447 static SIMPLE_DEV_PM_OPS(snd_fm801_pm, snd_fm801_suspend, snd_fm801_resume);
1448 #define SND_FM801_PM_OPS	&snd_fm801_pm
1449 #else
1450 #define SND_FM801_PM_OPS	NULL
1451 #endif /* CONFIG_PM_SLEEP */
1452 
1453 static struct pci_driver fm801_driver = {
1454 	.name = KBUILD_MODNAME,
1455 	.id_table = snd_fm801_ids,
1456 	.probe = snd_card_fm801_probe,
1457 	.remove = snd_card_fm801_remove,
1458 	.driver = {
1459 		.pm = SND_FM801_PM_OPS,
1460 	},
1461 };
1462 
1463 module_pci_driver(fm801_driver);
1464