xref: /openbmc/linux/sound/pci/fm801.c (revision 089a49b6)
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/pci.h>
27 #include <linux/slab.h>
28 #include <linux/module.h>
29 #include <sound/core.h>
30 #include <sound/pcm.h>
31 #include <sound/tlv.h>
32 #include <sound/ac97_codec.h>
33 #include <sound/mpu401.h>
34 #include <sound/opl3.h>
35 #include <sound/initval.h>
36 
37 #include <asm/io.h>
38 
39 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
40 #include <media/tea575x.h>
41 #endif
42 
43 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
44 MODULE_DESCRIPTION("ForteMedia FM801");
45 MODULE_LICENSE("GPL");
46 MODULE_SUPPORTED_DEVICE("{{ForteMedia,FM801},"
47 		"{Genius,SoundMaker Live 5.1}}");
48 
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
51 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
52 /*
53  *  Enable TEA575x tuner
54  *    1 = MediaForte 256-PCS
55  *    2 = MediaForte 256-PCP
56  *    3 = MediaForte 64-PCR
57  *   16 = setup tuner only (this is additional bit), i.e. SF64-PCR FM card
58  *  High 16-bits are video (radio) device number + 1
59  */
60 static int tea575x_tuner[SNDRV_CARDS];
61 static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
62 
63 module_param_array(index, int, NULL, 0444);
64 MODULE_PARM_DESC(index, "Index value for the FM801 soundcard.");
65 module_param_array(id, charp, NULL, 0444);
66 MODULE_PARM_DESC(id, "ID string for the FM801 soundcard.");
67 module_param_array(enable, bool, NULL, 0444);
68 MODULE_PARM_DESC(enable, "Enable FM801 soundcard.");
69 module_param_array(tea575x_tuner, int, NULL, 0444);
70 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).");
71 module_param_array(radio_nr, int, NULL, 0444);
72 MODULE_PARM_DESC(radio_nr, "Radio device numbers");
73 
74 
75 #define TUNER_DISABLED		(1<<3)
76 #define TUNER_ONLY		(1<<4)
77 #define TUNER_TYPE_MASK		(~TUNER_ONLY & 0xFFFF)
78 
79 /*
80  *  Direct registers
81  */
82 
83 #define FM801_REG(chip, reg)	(chip->port + FM801_##reg)
84 
85 #define FM801_PCM_VOL		0x00	/* PCM Output Volume */
86 #define FM801_FM_VOL		0x02	/* FM Output Volume */
87 #define FM801_I2S_VOL		0x04	/* I2S Volume */
88 #define FM801_REC_SRC		0x06	/* Record Source */
89 #define FM801_PLY_CTRL		0x08	/* Playback Control */
90 #define FM801_PLY_COUNT		0x0a	/* Playback Count */
91 #define FM801_PLY_BUF1		0x0c	/* Playback Bufer I */
92 #define FM801_PLY_BUF2		0x10	/* Playback Buffer II */
93 #define FM801_CAP_CTRL		0x14	/* Capture Control */
94 #define FM801_CAP_COUNT		0x16	/* Capture Count */
95 #define FM801_CAP_BUF1		0x18	/* Capture Buffer I */
96 #define FM801_CAP_BUF2		0x1c	/* Capture Buffer II */
97 #define FM801_CODEC_CTRL	0x22	/* Codec Control */
98 #define FM801_I2S_MODE		0x24	/* I2S Mode Control */
99 #define FM801_VOLUME		0x26	/* Volume Up/Down/Mute Status */
100 #define FM801_I2C_CTRL		0x29	/* I2C Control */
101 #define FM801_AC97_CMD		0x2a	/* AC'97 Command */
102 #define FM801_AC97_DATA		0x2c	/* AC'97 Data */
103 #define FM801_MPU401_DATA	0x30	/* MPU401 Data */
104 #define FM801_MPU401_CMD	0x31	/* MPU401 Command */
105 #define FM801_GPIO_CTRL		0x52	/* General Purpose I/O Control */
106 #define FM801_GEN_CTRL		0x54	/* General Control */
107 #define FM801_IRQ_MASK		0x56	/* Interrupt Mask */
108 #define FM801_IRQ_STATUS	0x5a	/* Interrupt Status */
109 #define FM801_OPL3_BANK0	0x68	/* OPL3 Status Read / Bank 0 Write */
110 #define FM801_OPL3_DATA0	0x69	/* OPL3 Data 0 Write */
111 #define FM801_OPL3_BANK1	0x6a	/* OPL3 Bank 1 Write */
112 #define FM801_OPL3_DATA1	0x6b	/* OPL3 Bank 1 Write */
113 #define FM801_POWERDOWN		0x70	/* Blocks Power Down Control */
114 
115 /* codec access */
116 #define FM801_AC97_READ		(1<<7)	/* read=1, write=0 */
117 #define FM801_AC97_VALID	(1<<8)	/* port valid=1 */
118 #define FM801_AC97_BUSY		(1<<9)	/* busy=1 */
119 #define FM801_AC97_ADDR_SHIFT	10	/* codec id (2bit) */
120 
121 /* playback and record control register bits */
122 #define FM801_BUF1_LAST		(1<<1)
123 #define FM801_BUF2_LAST		(1<<2)
124 #define FM801_START		(1<<5)
125 #define FM801_PAUSE		(1<<6)
126 #define FM801_IMMED_STOP	(1<<7)
127 #define FM801_RATE_SHIFT	8
128 #define FM801_RATE_MASK		(15 << FM801_RATE_SHIFT)
129 #define FM801_CHANNELS_4	(1<<12)	/* playback only */
130 #define FM801_CHANNELS_6	(2<<12)	/* playback only */
131 #define FM801_CHANNELS_6MS	(3<<12)	/* playback only */
132 #define FM801_CHANNELS_MASK	(3<<12)
133 #define FM801_16BIT		(1<<14)
134 #define FM801_STEREO		(1<<15)
135 
136 /* IRQ status bits */
137 #define FM801_IRQ_PLAYBACK	(1<<8)
138 #define FM801_IRQ_CAPTURE	(1<<9)
139 #define FM801_IRQ_VOLUME	(1<<14)
140 #define FM801_IRQ_MPU		(1<<15)
141 
142 /* GPIO control register */
143 #define FM801_GPIO_GP0		(1<<0)	/* read/write */
144 #define FM801_GPIO_GP1		(1<<1)
145 #define FM801_GPIO_GP2		(1<<2)
146 #define FM801_GPIO_GP3		(1<<3)
147 #define FM801_GPIO_GP(x)	(1<<(0+(x)))
148 #define FM801_GPIO_GD0		(1<<8)	/* directions: 1 = input, 0 = output*/
149 #define FM801_GPIO_GD1		(1<<9)
150 #define FM801_GPIO_GD2		(1<<10)
151 #define FM801_GPIO_GD3		(1<<11)
152 #define FM801_GPIO_GD(x)	(1<<(8+(x)))
153 #define FM801_GPIO_GS0		(1<<12)	/* function select: */
154 #define FM801_GPIO_GS1		(1<<13)	/*    1 = GPIO */
155 #define FM801_GPIO_GS2		(1<<14)	/*    0 = other (S/PDIF, VOL) */
156 #define FM801_GPIO_GS3		(1<<15)
157 #define FM801_GPIO_GS(x)	(1<<(12+(x)))
158 
159 /*
160 
161  */
162 
163 struct fm801 {
164 	int irq;
165 
166 	unsigned long port;	/* I/O port number */
167 	unsigned int multichannel: 1,	/* multichannel support */
168 		     secondary: 1;	/* secondary codec */
169 	unsigned char secondary_addr;	/* address of the secondary codec */
170 	unsigned int tea575x_tuner;	/* tuner access method & flags */
171 
172 	unsigned short ply_ctrl; /* playback control */
173 	unsigned short cap_ctrl; /* capture control */
174 
175 	unsigned long ply_buffer;
176 	unsigned int ply_buf;
177 	unsigned int ply_count;
178 	unsigned int ply_size;
179 	unsigned int ply_pos;
180 
181 	unsigned long cap_buffer;
182 	unsigned int cap_buf;
183 	unsigned int cap_count;
184 	unsigned int cap_size;
185 	unsigned int cap_pos;
186 
187 	struct snd_ac97_bus *ac97_bus;
188 	struct snd_ac97 *ac97;
189 	struct snd_ac97 *ac97_sec;
190 
191 	struct pci_dev *pci;
192 	struct snd_card *card;
193 	struct snd_pcm *pcm;
194 	struct snd_rawmidi *rmidi;
195 	struct snd_pcm_substream *playback_substream;
196 	struct snd_pcm_substream *capture_substream;
197 	unsigned int p_dma_size;
198 	unsigned int c_dma_size;
199 
200 	spinlock_t reg_lock;
201 	struct snd_info_entry *proc_entry;
202 
203 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
204 	struct v4l2_device v4l2_dev;
205 	struct snd_tea575x tea;
206 #endif
207 
208 #ifdef CONFIG_PM_SLEEP
209 	u16 saved_regs[0x20];
210 #endif
211 };
212 
213 static DEFINE_PCI_DEVICE_TABLE(snd_fm801_ids) = {
214 	{ 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* FM801 */
215 	{ 0x5213, 0x0510, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0, },   /* Gallant Odyssey Sound 4 */
216 	{ 0, }
217 };
218 
219 MODULE_DEVICE_TABLE(pci, snd_fm801_ids);
220 
221 /*
222  *  common I/O routines
223  */
224 
225 static int snd_fm801_update_bits(struct fm801 *chip, unsigned short reg,
226 				 unsigned short mask, unsigned short value)
227 {
228 	int change;
229 	unsigned long flags;
230 	unsigned short old, new;
231 
232 	spin_lock_irqsave(&chip->reg_lock, flags);
233 	old = inw(chip->port + reg);
234 	new = (old & ~mask) | value;
235 	change = old != new;
236 	if (change)
237 		outw(new, chip->port + reg);
238 	spin_unlock_irqrestore(&chip->reg_lock, flags);
239 	return change;
240 }
241 
242 static void snd_fm801_codec_write(struct snd_ac97 *ac97,
243 				  unsigned short reg,
244 				  unsigned short val)
245 {
246 	struct fm801 *chip = ac97->private_data;
247 	int idx;
248 
249 	/*
250 	 *  Wait until the codec interface is not ready..
251 	 */
252 	for (idx = 0; idx < 100; idx++) {
253 		if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
254 			goto ok1;
255 		udelay(10);
256 	}
257 	snd_printk(KERN_ERR "AC'97 interface is busy (1)\n");
258 	return;
259 
260  ok1:
261 	/* write data and address */
262 	outw(val, FM801_REG(chip, AC97_DATA));
263 	outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT), FM801_REG(chip, AC97_CMD));
264 	/*
265 	 *  Wait until the write command is not completed..
266          */
267 	for (idx = 0; idx < 1000; idx++) {
268 		if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
269 			return;
270 		udelay(10);
271 	}
272 	snd_printk(KERN_ERR "AC'97 interface #%d is busy (2)\n", ac97->num);
273 }
274 
275 static unsigned short snd_fm801_codec_read(struct snd_ac97 *ac97, unsigned short reg)
276 {
277 	struct fm801 *chip = ac97->private_data;
278 	int idx;
279 
280 	/*
281 	 *  Wait until the codec interface is not ready..
282 	 */
283 	for (idx = 0; idx < 100; idx++) {
284 		if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
285 			goto ok1;
286 		udelay(10);
287 	}
288 	snd_printk(KERN_ERR "AC'97 interface is busy (1)\n");
289 	return 0;
290 
291  ok1:
292 	/* read command */
293 	outw(reg | (ac97->addr << FM801_AC97_ADDR_SHIFT) | FM801_AC97_READ,
294 	     FM801_REG(chip, AC97_CMD));
295 	for (idx = 0; idx < 100; idx++) {
296 		if (!(inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_BUSY))
297 			goto ok2;
298 		udelay(10);
299 	}
300 	snd_printk(KERN_ERR "AC'97 interface #%d is busy (2)\n", ac97->num);
301 	return 0;
302 
303  ok2:
304 	for (idx = 0; idx < 1000; idx++) {
305 		if (inw(FM801_REG(chip, AC97_CMD)) & FM801_AC97_VALID)
306 			goto ok3;
307 		udelay(10);
308 	}
309 	snd_printk(KERN_ERR "AC'97 interface #%d is not valid (2)\n", ac97->num);
310 	return 0;
311 
312  ok3:
313 	return inw(FM801_REG(chip, AC97_DATA));
314 }
315 
316 static unsigned int rates[] = {
317   5500,  8000,  9600, 11025,
318   16000, 19200, 22050, 32000,
319   38400, 44100, 48000
320 };
321 
322 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
323 	.count = ARRAY_SIZE(rates),
324 	.list = rates,
325 	.mask = 0,
326 };
327 
328 static unsigned int channels[] = {
329   2, 4, 6
330 };
331 
332 static struct snd_pcm_hw_constraint_list hw_constraints_channels = {
333 	.count = ARRAY_SIZE(channels),
334 	.list = channels,
335 	.mask = 0,
336 };
337 
338 /*
339  *  Sample rate routines
340  */
341 
342 static unsigned short snd_fm801_rate_bits(unsigned int rate)
343 {
344 	unsigned int idx;
345 
346 	for (idx = 0; idx < ARRAY_SIZE(rates); idx++)
347 		if (rates[idx] == rate)
348 			return idx;
349 	snd_BUG();
350 	return ARRAY_SIZE(rates) - 1;
351 }
352 
353 /*
354  *  PCM part
355  */
356 
357 static int snd_fm801_playback_trigger(struct snd_pcm_substream *substream,
358 				      int cmd)
359 {
360 	struct fm801 *chip = snd_pcm_substream_chip(substream);
361 
362 	spin_lock(&chip->reg_lock);
363 	switch (cmd) {
364 	case SNDRV_PCM_TRIGGER_START:
365 		chip->ply_ctrl &= ~(FM801_BUF1_LAST |
366 				     FM801_BUF2_LAST |
367 				     FM801_PAUSE);
368 		chip->ply_ctrl |= FM801_START |
369 				   FM801_IMMED_STOP;
370 		break;
371 	case SNDRV_PCM_TRIGGER_STOP:
372 		chip->ply_ctrl &= ~(FM801_START | FM801_PAUSE);
373 		break;
374 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
375 	case SNDRV_PCM_TRIGGER_SUSPEND:
376 		chip->ply_ctrl |= FM801_PAUSE;
377 		break;
378 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
379 	case SNDRV_PCM_TRIGGER_RESUME:
380 		chip->ply_ctrl &= ~FM801_PAUSE;
381 		break;
382 	default:
383 		spin_unlock(&chip->reg_lock);
384 		snd_BUG();
385 		return -EINVAL;
386 	}
387 	outw(chip->ply_ctrl, FM801_REG(chip, PLY_CTRL));
388 	spin_unlock(&chip->reg_lock);
389 	return 0;
390 }
391 
392 static int snd_fm801_capture_trigger(struct snd_pcm_substream *substream,
393 				     int cmd)
394 {
395 	struct fm801 *chip = snd_pcm_substream_chip(substream);
396 
397 	spin_lock(&chip->reg_lock);
398 	switch (cmd) {
399 	case SNDRV_PCM_TRIGGER_START:
400 		chip->cap_ctrl &= ~(FM801_BUF1_LAST |
401 				     FM801_BUF2_LAST |
402 				     FM801_PAUSE);
403 		chip->cap_ctrl |= FM801_START |
404 				   FM801_IMMED_STOP;
405 		break;
406 	case SNDRV_PCM_TRIGGER_STOP:
407 		chip->cap_ctrl &= ~(FM801_START | FM801_PAUSE);
408 		break;
409 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
410 	case SNDRV_PCM_TRIGGER_SUSPEND:
411 		chip->cap_ctrl |= FM801_PAUSE;
412 		break;
413 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
414 	case SNDRV_PCM_TRIGGER_RESUME:
415 		chip->cap_ctrl &= ~FM801_PAUSE;
416 		break;
417 	default:
418 		spin_unlock(&chip->reg_lock);
419 		snd_BUG();
420 		return -EINVAL;
421 	}
422 	outw(chip->cap_ctrl, FM801_REG(chip, CAP_CTRL));
423 	spin_unlock(&chip->reg_lock);
424 	return 0;
425 }
426 
427 static int snd_fm801_hw_params(struct snd_pcm_substream *substream,
428 			       struct snd_pcm_hw_params *hw_params)
429 {
430 	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
431 }
432 
433 static int snd_fm801_hw_free(struct snd_pcm_substream *substream)
434 {
435 	return snd_pcm_lib_free_pages(substream);
436 }
437 
438 static int snd_fm801_playback_prepare(struct snd_pcm_substream *substream)
439 {
440 	struct fm801 *chip = snd_pcm_substream_chip(substream);
441 	struct snd_pcm_runtime *runtime = substream->runtime;
442 
443 	chip->ply_size = snd_pcm_lib_buffer_bytes(substream);
444 	chip->ply_count = snd_pcm_lib_period_bytes(substream);
445 	spin_lock_irq(&chip->reg_lock);
446 	chip->ply_ctrl &= ~(FM801_START | FM801_16BIT |
447 			     FM801_STEREO | FM801_RATE_MASK |
448 			     FM801_CHANNELS_MASK);
449 	if (snd_pcm_format_width(runtime->format) == 16)
450 		chip->ply_ctrl |= FM801_16BIT;
451 	if (runtime->channels > 1) {
452 		chip->ply_ctrl |= FM801_STEREO;
453 		if (runtime->channels == 4)
454 			chip->ply_ctrl |= FM801_CHANNELS_4;
455 		else if (runtime->channels == 6)
456 			chip->ply_ctrl |= FM801_CHANNELS_6;
457 	}
458 	chip->ply_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
459 	chip->ply_buf = 0;
460 	outw(chip->ply_ctrl, FM801_REG(chip, PLY_CTRL));
461 	outw(chip->ply_count - 1, FM801_REG(chip, PLY_COUNT));
462 	chip->ply_buffer = runtime->dma_addr;
463 	chip->ply_pos = 0;
464 	outl(chip->ply_buffer, FM801_REG(chip, PLY_BUF1));
465 	outl(chip->ply_buffer + (chip->ply_count % chip->ply_size), FM801_REG(chip, PLY_BUF2));
466 	spin_unlock_irq(&chip->reg_lock);
467 	return 0;
468 }
469 
470 static int snd_fm801_capture_prepare(struct snd_pcm_substream *substream)
471 {
472 	struct fm801 *chip = snd_pcm_substream_chip(substream);
473 	struct snd_pcm_runtime *runtime = substream->runtime;
474 
475 	chip->cap_size = snd_pcm_lib_buffer_bytes(substream);
476 	chip->cap_count = snd_pcm_lib_period_bytes(substream);
477 	spin_lock_irq(&chip->reg_lock);
478 	chip->cap_ctrl &= ~(FM801_START | FM801_16BIT |
479 			     FM801_STEREO | FM801_RATE_MASK);
480 	if (snd_pcm_format_width(runtime->format) == 16)
481 		chip->cap_ctrl |= FM801_16BIT;
482 	if (runtime->channels > 1)
483 		chip->cap_ctrl |= FM801_STEREO;
484 	chip->cap_ctrl |= snd_fm801_rate_bits(runtime->rate) << FM801_RATE_SHIFT;
485 	chip->cap_buf = 0;
486 	outw(chip->cap_ctrl, FM801_REG(chip, CAP_CTRL));
487 	outw(chip->cap_count - 1, FM801_REG(chip, CAP_COUNT));
488 	chip->cap_buffer = runtime->dma_addr;
489 	chip->cap_pos = 0;
490 	outl(chip->cap_buffer, FM801_REG(chip, CAP_BUF1));
491 	outl(chip->cap_buffer + (chip->cap_count % chip->cap_size), FM801_REG(chip, CAP_BUF2));
492 	spin_unlock_irq(&chip->reg_lock);
493 	return 0;
494 }
495 
496 static snd_pcm_uframes_t snd_fm801_playback_pointer(struct snd_pcm_substream *substream)
497 {
498 	struct fm801 *chip = snd_pcm_substream_chip(substream);
499 	size_t ptr;
500 
501 	if (!(chip->ply_ctrl & FM801_START))
502 		return 0;
503 	spin_lock(&chip->reg_lock);
504 	ptr = chip->ply_pos + (chip->ply_count - 1) - inw(FM801_REG(chip, PLY_COUNT));
505 	if (inw(FM801_REG(chip, IRQ_STATUS)) & FM801_IRQ_PLAYBACK) {
506 		ptr += chip->ply_count;
507 		ptr %= chip->ply_size;
508 	}
509 	spin_unlock(&chip->reg_lock);
510 	return bytes_to_frames(substream->runtime, ptr);
511 }
512 
513 static snd_pcm_uframes_t snd_fm801_capture_pointer(struct snd_pcm_substream *substream)
514 {
515 	struct fm801 *chip = snd_pcm_substream_chip(substream);
516 	size_t ptr;
517 
518 	if (!(chip->cap_ctrl & FM801_START))
519 		return 0;
520 	spin_lock(&chip->reg_lock);
521 	ptr = chip->cap_pos + (chip->cap_count - 1) - inw(FM801_REG(chip, CAP_COUNT));
522 	if (inw(FM801_REG(chip, IRQ_STATUS)) & FM801_IRQ_CAPTURE) {
523 		ptr += chip->cap_count;
524 		ptr %= chip->cap_size;
525 	}
526 	spin_unlock(&chip->reg_lock);
527 	return bytes_to_frames(substream->runtime, ptr);
528 }
529 
530 static irqreturn_t snd_fm801_interrupt(int irq, void *dev_id)
531 {
532 	struct fm801 *chip = dev_id;
533 	unsigned short status;
534 	unsigned int tmp;
535 
536 	status = inw(FM801_REG(chip, IRQ_STATUS));
537 	status &= FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU|FM801_IRQ_VOLUME;
538 	if (! status)
539 		return IRQ_NONE;
540 	/* ack first */
541 	outw(status, FM801_REG(chip, IRQ_STATUS));
542 	if (chip->pcm && (status & FM801_IRQ_PLAYBACK) && chip->playback_substream) {
543 		spin_lock(&chip->reg_lock);
544 		chip->ply_buf++;
545 		chip->ply_pos += chip->ply_count;
546 		chip->ply_pos %= chip->ply_size;
547 		tmp = chip->ply_pos + chip->ply_count;
548 		tmp %= chip->ply_size;
549 		outl(chip->ply_buffer + tmp,
550 				(chip->ply_buf & 1) ?
551 					FM801_REG(chip, PLY_BUF1) :
552 					FM801_REG(chip, PLY_BUF2));
553 		spin_unlock(&chip->reg_lock);
554 		snd_pcm_period_elapsed(chip->playback_substream);
555 	}
556 	if (chip->pcm && (status & FM801_IRQ_CAPTURE) && chip->capture_substream) {
557 		spin_lock(&chip->reg_lock);
558 		chip->cap_buf++;
559 		chip->cap_pos += chip->cap_count;
560 		chip->cap_pos %= chip->cap_size;
561 		tmp = chip->cap_pos + chip->cap_count;
562 		tmp %= chip->cap_size;
563 		outl(chip->cap_buffer + tmp,
564 				(chip->cap_buf & 1) ?
565 					FM801_REG(chip, CAP_BUF1) :
566 					FM801_REG(chip, CAP_BUF2));
567 		spin_unlock(&chip->reg_lock);
568 		snd_pcm_period_elapsed(chip->capture_substream);
569 	}
570 	if (chip->rmidi && (status & FM801_IRQ_MPU))
571 		snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
572 	if (status & FM801_IRQ_VOLUME)
573 		;/* TODO */
574 
575 	return IRQ_HANDLED;
576 }
577 
578 static struct snd_pcm_hardware snd_fm801_playback =
579 {
580 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
581 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
582 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
583 				 SNDRV_PCM_INFO_MMAP_VALID),
584 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
585 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
586 	.rate_min =		5500,
587 	.rate_max =		48000,
588 	.channels_min =		1,
589 	.channels_max =		2,
590 	.buffer_bytes_max =	(128*1024),
591 	.period_bytes_min =	64,
592 	.period_bytes_max =	(128*1024),
593 	.periods_min =		1,
594 	.periods_max =		1024,
595 	.fifo_size =		0,
596 };
597 
598 static struct snd_pcm_hardware snd_fm801_capture =
599 {
600 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
601 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
602 				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
603 				 SNDRV_PCM_INFO_MMAP_VALID),
604 	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
605 	.rates =		SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
606 	.rate_min =		5500,
607 	.rate_max =		48000,
608 	.channels_min =		1,
609 	.channels_max =		2,
610 	.buffer_bytes_max =	(128*1024),
611 	.period_bytes_min =	64,
612 	.period_bytes_max =	(128*1024),
613 	.periods_min =		1,
614 	.periods_max =		1024,
615 	.fifo_size =		0,
616 };
617 
618 static int snd_fm801_playback_open(struct snd_pcm_substream *substream)
619 {
620 	struct fm801 *chip = snd_pcm_substream_chip(substream);
621 	struct snd_pcm_runtime *runtime = substream->runtime;
622 	int err;
623 
624 	chip->playback_substream = substream;
625 	runtime->hw = snd_fm801_playback;
626 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
627 				   &hw_constraints_rates);
628 	if (chip->multichannel) {
629 		runtime->hw.channels_max = 6;
630 		snd_pcm_hw_constraint_list(runtime, 0,
631 					   SNDRV_PCM_HW_PARAM_CHANNELS,
632 					   &hw_constraints_channels);
633 	}
634 	if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
635 		return err;
636 	return 0;
637 }
638 
639 static int snd_fm801_capture_open(struct snd_pcm_substream *substream)
640 {
641 	struct fm801 *chip = snd_pcm_substream_chip(substream);
642 	struct snd_pcm_runtime *runtime = substream->runtime;
643 	int err;
644 
645 	chip->capture_substream = substream;
646 	runtime->hw = snd_fm801_capture;
647 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
648 				   &hw_constraints_rates);
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_playback_close(struct snd_pcm_substream *substream)
655 {
656 	struct fm801 *chip = snd_pcm_substream_chip(substream);
657 
658 	chip->playback_substream = NULL;
659 	return 0;
660 }
661 
662 static int snd_fm801_capture_close(struct snd_pcm_substream *substream)
663 {
664 	struct fm801 *chip = snd_pcm_substream_chip(substream);
665 
666 	chip->capture_substream = NULL;
667 	return 0;
668 }
669 
670 static struct snd_pcm_ops snd_fm801_playback_ops = {
671 	.open =		snd_fm801_playback_open,
672 	.close =	snd_fm801_playback_close,
673 	.ioctl =	snd_pcm_lib_ioctl,
674 	.hw_params =	snd_fm801_hw_params,
675 	.hw_free =	snd_fm801_hw_free,
676 	.prepare =	snd_fm801_playback_prepare,
677 	.trigger =	snd_fm801_playback_trigger,
678 	.pointer =	snd_fm801_playback_pointer,
679 };
680 
681 static struct snd_pcm_ops snd_fm801_capture_ops = {
682 	.open =		snd_fm801_capture_open,
683 	.close =	snd_fm801_capture_close,
684 	.ioctl =	snd_pcm_lib_ioctl,
685 	.hw_params =	snd_fm801_hw_params,
686 	.hw_free =	snd_fm801_hw_free,
687 	.prepare =	snd_fm801_capture_prepare,
688 	.trigger =	snd_fm801_capture_trigger,
689 	.pointer =	snd_fm801_capture_pointer,
690 };
691 
692 static int snd_fm801_pcm(struct fm801 *chip, int device, struct snd_pcm **rpcm)
693 {
694 	struct snd_pcm *pcm;
695 	int err;
696 
697 	if (rpcm)
698 		*rpcm = NULL;
699 	if ((err = snd_pcm_new(chip->card, "FM801", device, 1, 1, &pcm)) < 0)
700 		return err;
701 
702 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_fm801_playback_ops);
703 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_fm801_capture_ops);
704 
705 	pcm->private_data = chip;
706 	pcm->info_flags = 0;
707 	strcpy(pcm->name, "FM801");
708 	chip->pcm = pcm;
709 
710 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
711 					      snd_dma_pci_data(chip->pci),
712 					      chip->multichannel ? 128*1024 : 64*1024, 128*1024);
713 
714 	err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK,
715 				     snd_pcm_alt_chmaps,
716 				     chip->multichannel ? 6 : 2, 0,
717 				     NULL);
718 	if (err < 0)
719 		return err;
720 
721 	if (rpcm)
722 		*rpcm = pcm;
723 	return 0;
724 }
725 
726 /*
727  *  TEA5757 radio
728  */
729 
730 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
731 
732 /* GPIO to TEA575x maps */
733 struct snd_fm801_tea575x_gpio {
734 	u8 data, clk, wren, most;
735 	char *name;
736 };
737 
738 static struct snd_fm801_tea575x_gpio snd_fm801_tea575x_gpios[] = {
739 	{ .data = 1, .clk = 3, .wren = 2, .most = 0, .name = "SF256-PCS" },
740 	{ .data = 1, .clk = 0, .wren = 2, .most = 3, .name = "SF256-PCP" },
741 	{ .data = 2, .clk = 0, .wren = 1, .most = 3, .name = "SF64-PCR" },
742 };
743 
744 #define get_tea575x_gpio(chip) \
745 	(&snd_fm801_tea575x_gpios[((chip)->tea575x_tuner & TUNER_TYPE_MASK) - 1])
746 
747 static void snd_fm801_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
748 {
749 	struct fm801 *chip = tea->private_data;
750 	unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
751 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
752 
753 	reg &= ~(FM801_GPIO_GP(gpio.data) |
754 		 FM801_GPIO_GP(gpio.clk) |
755 		 FM801_GPIO_GP(gpio.wren));
756 
757 	reg |= (pins & TEA575X_DATA) ? FM801_GPIO_GP(gpio.data) : 0;
758 	reg |= (pins & TEA575X_CLK)  ? FM801_GPIO_GP(gpio.clk) : 0;
759 	/* WRITE_ENABLE is inverted */
760 	reg |= (pins & TEA575X_WREN) ? 0 : FM801_GPIO_GP(gpio.wren);
761 
762 	outw(reg, FM801_REG(chip, GPIO_CTRL));
763 }
764 
765 static u8 snd_fm801_tea575x_get_pins(struct snd_tea575x *tea)
766 {
767 	struct fm801 *chip = tea->private_data;
768 	unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
769 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
770 	u8 ret;
771 
772 	ret = 0;
773 	if (reg & FM801_GPIO_GP(gpio.data))
774 		ret |= TEA575X_DATA;
775 	if (reg & FM801_GPIO_GP(gpio.most))
776 		ret |= TEA575X_MOST;
777 	return ret;
778 }
779 
780 static void snd_fm801_tea575x_set_direction(struct snd_tea575x *tea, bool output)
781 {
782 	struct fm801 *chip = tea->private_data;
783 	unsigned short reg = inw(FM801_REG(chip, GPIO_CTRL));
784 	struct snd_fm801_tea575x_gpio gpio = *get_tea575x_gpio(chip);
785 
786 	/* use GPIO lines and set write enable bit */
787 	reg |= FM801_GPIO_GS(gpio.data) |
788 	       FM801_GPIO_GS(gpio.wren) |
789 	       FM801_GPIO_GS(gpio.clk) |
790 	       FM801_GPIO_GS(gpio.most);
791 	if (output) {
792 		/* all of lines are in the write direction */
793 		/* clear data and clock lines */
794 		reg &= ~(FM801_GPIO_GD(gpio.data) |
795 			 FM801_GPIO_GD(gpio.wren) |
796 			 FM801_GPIO_GD(gpio.clk) |
797 			 FM801_GPIO_GP(gpio.data) |
798 			 FM801_GPIO_GP(gpio.clk) |
799 			 FM801_GPIO_GP(gpio.wren));
800 	} else {
801 		/* use GPIO lines, set data direction to input */
802 		reg |= FM801_GPIO_GD(gpio.data) |
803 		       FM801_GPIO_GD(gpio.most) |
804 		       FM801_GPIO_GP(gpio.data) |
805 		       FM801_GPIO_GP(gpio.most) |
806 		       FM801_GPIO_GP(gpio.wren);
807 		/* all of lines are in the write direction, except data */
808 		/* clear data, write enable and clock lines */
809 		reg &= ~(FM801_GPIO_GD(gpio.wren) |
810 			 FM801_GPIO_GD(gpio.clk) |
811 			 FM801_GPIO_GP(gpio.clk));
812 	}
813 
814 	outw(reg, FM801_REG(chip, GPIO_CTRL));
815 }
816 
817 static struct snd_tea575x_ops snd_fm801_tea_ops = {
818 	.set_pins = snd_fm801_tea575x_set_pins,
819 	.get_pins = snd_fm801_tea575x_get_pins,
820 	.set_direction = snd_fm801_tea575x_set_direction,
821 };
822 #endif
823 
824 /*
825  *  Mixer routines
826  */
827 
828 #define FM801_SINGLE(xname, reg, shift, mask, invert) \
829 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_single, \
830   .get = snd_fm801_get_single, .put = snd_fm801_put_single, \
831   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
832 
833 static int snd_fm801_info_single(struct snd_kcontrol *kcontrol,
834 				 struct snd_ctl_elem_info *uinfo)
835 {
836 	int mask = (kcontrol->private_value >> 16) & 0xff;
837 
838 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
839 	uinfo->count = 1;
840 	uinfo->value.integer.min = 0;
841 	uinfo->value.integer.max = mask;
842 	return 0;
843 }
844 
845 static int snd_fm801_get_single(struct snd_kcontrol *kcontrol,
846 				struct snd_ctl_elem_value *ucontrol)
847 {
848 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
849 	int reg = kcontrol->private_value & 0xff;
850 	int shift = (kcontrol->private_value >> 8) & 0xff;
851 	int mask = (kcontrol->private_value >> 16) & 0xff;
852 	int invert = (kcontrol->private_value >> 24) & 0xff;
853 
854 	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift) & mask;
855 	if (invert)
856 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
857 	return 0;
858 }
859 
860 static int snd_fm801_put_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 	unsigned short val;
869 
870 	val = (ucontrol->value.integer.value[0] & mask);
871 	if (invert)
872 		val = mask - val;
873 	return snd_fm801_update_bits(chip, reg, mask << shift, val << shift);
874 }
875 
876 #define FM801_DOUBLE(xname, reg, shift_left, shift_right, mask, invert) \
877 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_fm801_info_double, \
878   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
879   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24) }
880 #define FM801_DOUBLE_TLV(xname, reg, shift_left, shift_right, mask, invert, xtlv) \
881 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
882   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
883   .name = xname, .info = snd_fm801_info_double, \
884   .get = snd_fm801_get_double, .put = snd_fm801_put_double, \
885   .private_value = reg | (shift_left << 8) | (shift_right << 12) | (mask << 16) | (invert << 24), \
886   .tlv = { .p = (xtlv) } }
887 
888 static int snd_fm801_info_double(struct snd_kcontrol *kcontrol,
889 				 struct snd_ctl_elem_info *uinfo)
890 {
891 	int mask = (kcontrol->private_value >> 16) & 0xff;
892 
893 	uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
894 	uinfo->count = 2;
895 	uinfo->value.integer.min = 0;
896 	uinfo->value.integer.max = mask;
897 	return 0;
898 }
899 
900 static int snd_fm801_get_double(struct snd_kcontrol *kcontrol,
901 				struct snd_ctl_elem_value *ucontrol)
902 {
903 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
904         int reg = kcontrol->private_value & 0xff;
905 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
906 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
907 	int mask = (kcontrol->private_value >> 16) & 0xff;
908 	int invert = (kcontrol->private_value >> 24) & 0xff;
909 
910 	spin_lock_irq(&chip->reg_lock);
911 	ucontrol->value.integer.value[0] = (inw(chip->port + reg) >> shift_left) & mask;
912 	ucontrol->value.integer.value[1] = (inw(chip->port + reg) >> shift_right) & mask;
913 	spin_unlock_irq(&chip->reg_lock);
914 	if (invert) {
915 		ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
916 		ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
917 	}
918 	return 0;
919 }
920 
921 static int snd_fm801_put_double(struct snd_kcontrol *kcontrol,
922 				struct snd_ctl_elem_value *ucontrol)
923 {
924 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
925 	int reg = kcontrol->private_value & 0xff;
926 	int shift_left = (kcontrol->private_value >> 8) & 0x0f;
927 	int shift_right = (kcontrol->private_value >> 12) & 0x0f;
928 	int mask = (kcontrol->private_value >> 16) & 0xff;
929 	int invert = (kcontrol->private_value >> 24) & 0xff;
930 	unsigned short val1, val2;
931 
932 	val1 = ucontrol->value.integer.value[0] & mask;
933 	val2 = ucontrol->value.integer.value[1] & mask;
934 	if (invert) {
935 		val1 = mask - val1;
936 		val2 = mask - val2;
937 	}
938 	return snd_fm801_update_bits(chip, reg,
939 				     (mask << shift_left) | (mask << shift_right),
940 				     (val1 << shift_left ) | (val2 << shift_right));
941 }
942 
943 static int snd_fm801_info_mux(struct snd_kcontrol *kcontrol,
944 			      struct snd_ctl_elem_info *uinfo)
945 {
946 	static char *texts[5] = {
947 		"AC97 Primary", "FM", "I2S", "PCM", "AC97 Secondary"
948 	};
949 
950 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
951 	uinfo->count = 1;
952 	uinfo->value.enumerated.items = 5;
953 	if (uinfo->value.enumerated.item > 4)
954 		uinfo->value.enumerated.item = 4;
955 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
956 	return 0;
957 }
958 
959 static int snd_fm801_get_mux(struct snd_kcontrol *kcontrol,
960 			     struct snd_ctl_elem_value *ucontrol)
961 {
962 	struct fm801 *chip = snd_kcontrol_chip(kcontrol);
963         unsigned short val;
964 
965 	val = inw(FM801_REG(chip, REC_SRC)) & 7;
966 	if (val > 4)
967 		val = 4;
968         ucontrol->value.enumerated.item[0] = val;
969         return 0;
970 }
971 
972 static int snd_fm801_put_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         if ((val = ucontrol->value.enumerated.item[0]) > 4)
979                 return -EINVAL;
980 	return snd_fm801_update_bits(chip, FM801_REC_SRC, 7, val);
981 }
982 
983 static const DECLARE_TLV_DB_SCALE(db_scale_dsp, -3450, 150, 0);
984 
985 #define FM801_CONTROLS ARRAY_SIZE(snd_fm801_controls)
986 
987 static struct snd_kcontrol_new snd_fm801_controls[] = {
988 FM801_DOUBLE_TLV("Wave Playback Volume", FM801_PCM_VOL, 0, 8, 31, 1,
989 		 db_scale_dsp),
990 FM801_SINGLE("Wave Playback Switch", FM801_PCM_VOL, 15, 1, 1),
991 FM801_DOUBLE_TLV("I2S Playback Volume", FM801_I2S_VOL, 0, 8, 31, 1,
992 		 db_scale_dsp),
993 FM801_SINGLE("I2S Playback Switch", FM801_I2S_VOL, 15, 1, 1),
994 FM801_DOUBLE_TLV("FM Playback Volume", FM801_FM_VOL, 0, 8, 31, 1,
995 		 db_scale_dsp),
996 FM801_SINGLE("FM Playback Switch", FM801_FM_VOL, 15, 1, 1),
997 {
998 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
999 	.name = "Digital Capture Source",
1000 	.info = snd_fm801_info_mux,
1001 	.get = snd_fm801_get_mux,
1002 	.put = snd_fm801_put_mux,
1003 }
1004 };
1005 
1006 #define FM801_CONTROLS_MULTI ARRAY_SIZE(snd_fm801_controls_multi)
1007 
1008 static struct snd_kcontrol_new snd_fm801_controls_multi[] = {
1009 FM801_SINGLE("AC97 2ch->4ch Copy Switch", FM801_CODEC_CTRL, 7, 1, 0),
1010 FM801_SINGLE("AC97 18-bit Switch", FM801_CODEC_CTRL, 10, 1, 0),
1011 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",CAPTURE,SWITCH), FM801_I2S_MODE, 8, 1, 0),
1012 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",PLAYBACK,SWITCH), FM801_I2S_MODE, 9, 1, 0),
1013 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("Raw Data ",CAPTURE,SWITCH), FM801_I2S_MODE, 10, 1, 0),
1014 FM801_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH), FM801_GEN_CTRL, 2, 1, 0),
1015 };
1016 
1017 static void snd_fm801_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
1018 {
1019 	struct fm801 *chip = bus->private_data;
1020 	chip->ac97_bus = NULL;
1021 }
1022 
1023 static void snd_fm801_mixer_free_ac97(struct snd_ac97 *ac97)
1024 {
1025 	struct fm801 *chip = ac97->private_data;
1026 	if (ac97->num == 0) {
1027 		chip->ac97 = NULL;
1028 	} else {
1029 		chip->ac97_sec = NULL;
1030 	}
1031 }
1032 
1033 static int snd_fm801_mixer(struct fm801 *chip)
1034 {
1035 	struct snd_ac97_template ac97;
1036 	unsigned int i;
1037 	int err;
1038 	static struct snd_ac97_bus_ops ops = {
1039 		.write = snd_fm801_codec_write,
1040 		.read = snd_fm801_codec_read,
1041 	};
1042 
1043 	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0)
1044 		return err;
1045 	chip->ac97_bus->private_free = snd_fm801_mixer_free_ac97_bus;
1046 
1047 	memset(&ac97, 0, sizeof(ac97));
1048 	ac97.private_data = chip;
1049 	ac97.private_free = snd_fm801_mixer_free_ac97;
1050 	if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0)
1051 		return err;
1052 	if (chip->secondary) {
1053 		ac97.num = 1;
1054 		ac97.addr = chip->secondary_addr;
1055 		if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97_sec)) < 0)
1056 			return err;
1057 	}
1058 	for (i = 0; i < FM801_CONTROLS; i++)
1059 		snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls[i], chip));
1060 	if (chip->multichannel) {
1061 		for (i = 0; i < FM801_CONTROLS_MULTI; i++)
1062 			snd_ctl_add(chip->card, snd_ctl_new1(&snd_fm801_controls_multi[i], chip));
1063 	}
1064 	return 0;
1065 }
1066 
1067 /*
1068  *  initialization routines
1069  */
1070 
1071 static int wait_for_codec(struct fm801 *chip, unsigned int codec_id,
1072 			  unsigned short reg, unsigned long waits)
1073 {
1074 	unsigned long timeout = jiffies + waits;
1075 
1076 	outw(FM801_AC97_READ | (codec_id << FM801_AC97_ADDR_SHIFT) | reg,
1077 	     FM801_REG(chip, AC97_CMD));
1078 	udelay(5);
1079 	do {
1080 		if ((inw(FM801_REG(chip, AC97_CMD)) & (FM801_AC97_VALID|FM801_AC97_BUSY))
1081 		    == FM801_AC97_VALID)
1082 			return 0;
1083 		schedule_timeout_uninterruptible(1);
1084 	} while (time_after(timeout, jiffies));
1085 	return -EIO;
1086 }
1087 
1088 static int snd_fm801_chip_init(struct fm801 *chip, int resume)
1089 {
1090 	unsigned short cmdw;
1091 
1092 	if (chip->tea575x_tuner & TUNER_ONLY)
1093 		goto __ac97_ok;
1094 
1095 	/* codec cold reset + AC'97 warm reset */
1096 	outw((1<<5) | (1<<6), FM801_REG(chip, CODEC_CTRL));
1097 	inw(FM801_REG(chip, CODEC_CTRL)); /* flush posting data */
1098 	udelay(100);
1099 	outw(0, FM801_REG(chip, CODEC_CTRL));
1100 
1101 	if (wait_for_codec(chip, 0, AC97_RESET, msecs_to_jiffies(750)) < 0)
1102 		if (!resume) {
1103 			snd_printk(KERN_INFO "Primary AC'97 codec not found, "
1104 					    "assume SF64-PCR (tuner-only)\n");
1105 			chip->tea575x_tuner = 3 | TUNER_ONLY;
1106 			goto __ac97_ok;
1107 		}
1108 
1109 	if (chip->multichannel) {
1110 		if (chip->secondary_addr) {
1111 			wait_for_codec(chip, chip->secondary_addr,
1112 				       AC97_VENDOR_ID1, msecs_to_jiffies(50));
1113 		} else {
1114 			/* my card has the secondary codec */
1115 			/* at address #3, so the loop is inverted */
1116 			int i;
1117 			for (i = 3; i > 0; i--) {
1118 				if (!wait_for_codec(chip, i, AC97_VENDOR_ID1,
1119 						     msecs_to_jiffies(50))) {
1120 					cmdw = inw(FM801_REG(chip, AC97_DATA));
1121 					if (cmdw != 0xffff && cmdw != 0) {
1122 						chip->secondary = 1;
1123 						chip->secondary_addr = i;
1124 						break;
1125 					}
1126 				}
1127 			}
1128 		}
1129 
1130 		/* the recovery phase, it seems that probing for non-existing codec might */
1131 		/* cause timeout problems */
1132 		wait_for_codec(chip, 0, AC97_VENDOR_ID1, msecs_to_jiffies(750));
1133 	}
1134 
1135       __ac97_ok:
1136 
1137 	/* init volume */
1138 	outw(0x0808, FM801_REG(chip, PCM_VOL));
1139 	outw(0x9f1f, FM801_REG(chip, FM_VOL));
1140 	outw(0x8808, FM801_REG(chip, I2S_VOL));
1141 
1142 	/* I2S control - I2S mode */
1143 	outw(0x0003, FM801_REG(chip, I2S_MODE));
1144 
1145 	/* interrupt setup */
1146 	cmdw = inw(FM801_REG(chip, IRQ_MASK));
1147 	if (chip->irq < 0)
1148 		cmdw |= 0x00c3;		/* mask everything, no PCM nor MPU */
1149 	else
1150 		cmdw &= ~0x0083;	/* unmask MPU, PLAYBACK & CAPTURE */
1151 	outw(cmdw, FM801_REG(chip, IRQ_MASK));
1152 
1153 	/* interrupt clear */
1154 	outw(FM801_IRQ_PLAYBACK|FM801_IRQ_CAPTURE|FM801_IRQ_MPU, FM801_REG(chip, IRQ_STATUS));
1155 
1156 	return 0;
1157 }
1158 
1159 
1160 static int snd_fm801_free(struct fm801 *chip)
1161 {
1162 	unsigned short cmdw;
1163 
1164 	if (chip->irq < 0)
1165 		goto __end_hw;
1166 
1167 	/* interrupt setup - mask everything */
1168 	cmdw = inw(FM801_REG(chip, IRQ_MASK));
1169 	cmdw |= 0x00c3;
1170 	outw(cmdw, FM801_REG(chip, IRQ_MASK));
1171 
1172       __end_hw:
1173 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1174 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1175 		snd_tea575x_exit(&chip->tea);
1176 		v4l2_device_unregister(&chip->v4l2_dev);
1177 	}
1178 #endif
1179 	if (chip->irq >= 0)
1180 		free_irq(chip->irq, chip);
1181 	pci_release_regions(chip->pci);
1182 	pci_disable_device(chip->pci);
1183 
1184 	kfree(chip);
1185 	return 0;
1186 }
1187 
1188 static int snd_fm801_dev_free(struct snd_device *device)
1189 {
1190 	struct fm801 *chip = device->device_data;
1191 	return snd_fm801_free(chip);
1192 }
1193 
1194 static int snd_fm801_create(struct snd_card *card,
1195 			    struct pci_dev *pci,
1196 			    int tea575x_tuner,
1197 			    int radio_nr,
1198 			    struct fm801 **rchip)
1199 {
1200 	struct fm801 *chip;
1201 	int err;
1202 	static struct snd_device_ops ops = {
1203 		.dev_free =	snd_fm801_dev_free,
1204 	};
1205 
1206 	*rchip = NULL;
1207 	if ((err = pci_enable_device(pci)) < 0)
1208 		return err;
1209 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1210 	if (chip == NULL) {
1211 		pci_disable_device(pci);
1212 		return -ENOMEM;
1213 	}
1214 	spin_lock_init(&chip->reg_lock);
1215 	chip->card = card;
1216 	chip->pci = pci;
1217 	chip->irq = -1;
1218 	chip->tea575x_tuner = tea575x_tuner;
1219 	if ((err = pci_request_regions(pci, "FM801")) < 0) {
1220 		kfree(chip);
1221 		pci_disable_device(pci);
1222 		return err;
1223 	}
1224 	chip->port = pci_resource_start(pci, 0);
1225 	if ((tea575x_tuner & TUNER_ONLY) == 0) {
1226 		if (request_irq(pci->irq, snd_fm801_interrupt, IRQF_SHARED,
1227 				KBUILD_MODNAME, chip)) {
1228 			snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->irq);
1229 			snd_fm801_free(chip);
1230 			return -EBUSY;
1231 		}
1232 		chip->irq = pci->irq;
1233 		pci_set_master(pci);
1234 	}
1235 
1236 	if (pci->revision >= 0xb1)	/* FM801-AU */
1237 		chip->multichannel = 1;
1238 
1239 	snd_fm801_chip_init(chip, 0);
1240 	/* init might set tuner access method */
1241 	tea575x_tuner = chip->tea575x_tuner;
1242 
1243 	if (chip->irq >= 0 && (tea575x_tuner & TUNER_ONLY)) {
1244 		pci_clear_master(pci);
1245 		free_irq(chip->irq, chip);
1246 		chip->irq = -1;
1247 	}
1248 
1249 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1250 		snd_fm801_free(chip);
1251 		return err;
1252 	}
1253 
1254 	snd_card_set_dev(card, &pci->dev);
1255 
1256 #ifdef CONFIG_SND_FM801_TEA575X_BOOL
1257 	err = v4l2_device_register(&pci->dev, &chip->v4l2_dev);
1258 	if (err < 0) {
1259 		snd_fm801_free(chip);
1260 		return err;
1261 	}
1262 	chip->tea.v4l2_dev = &chip->v4l2_dev;
1263 	chip->tea.radio_nr = radio_nr;
1264 	chip->tea.private_data = chip;
1265 	chip->tea.ops = &snd_fm801_tea_ops;
1266 	sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
1267 	if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
1268 	    (tea575x_tuner & TUNER_TYPE_MASK) < 4) {
1269 		if (snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1270 			snd_printk(KERN_ERR "TEA575x radio not found\n");
1271 			snd_fm801_free(chip);
1272 			return -ENODEV;
1273 		}
1274 	} else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
1275 		/* autodetect tuner connection */
1276 		for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
1277 			chip->tea575x_tuner = tea575x_tuner;
1278 			if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) {
1279 				snd_printk(KERN_INFO "detected TEA575x radio type %s\n",
1280 					   get_tea575x_gpio(chip)->name);
1281 				break;
1282 			}
1283 		}
1284 		if (tea575x_tuner == 4) {
1285 			snd_printk(KERN_ERR "TEA575x radio not found\n");
1286 			chip->tea575x_tuner = TUNER_DISABLED;
1287 		}
1288 	}
1289 	if (!(chip->tea575x_tuner & TUNER_DISABLED)) {
1290 		strlcpy(chip->tea.card, get_tea575x_gpio(chip)->name,
1291 			sizeof(chip->tea.card));
1292 	}
1293 #endif
1294 
1295 	*rchip = chip;
1296 	return 0;
1297 }
1298 
1299 static int snd_card_fm801_probe(struct pci_dev *pci,
1300 				const struct pci_device_id *pci_id)
1301 {
1302 	static int dev;
1303 	struct snd_card *card;
1304 	struct fm801 *chip;
1305 	struct snd_opl3 *opl3;
1306 	int err;
1307 
1308         if (dev >= SNDRV_CARDS)
1309                 return -ENODEV;
1310 	if (!enable[dev]) {
1311 		dev++;
1312 		return -ENOENT;
1313 	}
1314 
1315 	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
1316 	if (err < 0)
1317 		return err;
1318 	if ((err = snd_fm801_create(card, pci, tea575x_tuner[dev], radio_nr[dev], &chip)) < 0) {
1319 		snd_card_free(card);
1320 		return err;
1321 	}
1322 	card->private_data = chip;
1323 
1324 	strcpy(card->driver, "FM801");
1325 	strcpy(card->shortname, "ForteMedia FM801-");
1326 	strcat(card->shortname, chip->multichannel ? "AU" : "AS");
1327 	sprintf(card->longname, "%s at 0x%lx, irq %i",
1328 		card->shortname, chip->port, chip->irq);
1329 
1330 	if (chip->tea575x_tuner & TUNER_ONLY)
1331 		goto __fm801_tuner_only;
1332 
1333 	if ((err = snd_fm801_pcm(chip, 0, NULL)) < 0) {
1334 		snd_card_free(card);
1335 		return err;
1336 	}
1337 	if ((err = snd_fm801_mixer(chip)) < 0) {
1338 		snd_card_free(card);
1339 		return err;
1340 	}
1341 	if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_FM801,
1342 				       FM801_REG(chip, MPU401_DATA),
1343 				       MPU401_INFO_INTEGRATED |
1344 				       MPU401_INFO_IRQ_HOOK,
1345 				       -1, &chip->rmidi)) < 0) {
1346 		snd_card_free(card);
1347 		return err;
1348 	}
1349 	if ((err = snd_opl3_create(card, FM801_REG(chip, OPL3_BANK0),
1350 				   FM801_REG(chip, OPL3_BANK1),
1351 				   OPL3_HW_OPL3_FM801, 1, &opl3)) < 0) {
1352 		snd_card_free(card);
1353 		return err;
1354 	}
1355 	if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1356 		snd_card_free(card);
1357 		return err;
1358 	}
1359 
1360       __fm801_tuner_only:
1361 	if ((err = snd_card_register(card)) < 0) {
1362 		snd_card_free(card);
1363 		return err;
1364 	}
1365 	pci_set_drvdata(pci, card);
1366 	dev++;
1367 	return 0;
1368 }
1369 
1370 static void snd_card_fm801_remove(struct pci_dev *pci)
1371 {
1372 	snd_card_free(pci_get_drvdata(pci));
1373 }
1374 
1375 #ifdef CONFIG_PM_SLEEP
1376 static unsigned char saved_regs[] = {
1377 	FM801_PCM_VOL, FM801_I2S_VOL, FM801_FM_VOL, FM801_REC_SRC,
1378 	FM801_PLY_CTRL, FM801_PLY_COUNT, FM801_PLY_BUF1, FM801_PLY_BUF2,
1379 	FM801_CAP_CTRL, FM801_CAP_COUNT, FM801_CAP_BUF1, FM801_CAP_BUF2,
1380 	FM801_CODEC_CTRL, FM801_I2S_MODE, FM801_VOLUME, FM801_GEN_CTRL,
1381 };
1382 
1383 static int snd_fm801_suspend(struct device *dev)
1384 {
1385 	struct pci_dev *pci = to_pci_dev(dev);
1386 	struct snd_card *card = dev_get_drvdata(dev);
1387 	struct fm801 *chip = card->private_data;
1388 	int i;
1389 
1390 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1391 	snd_pcm_suspend_all(chip->pcm);
1392 	snd_ac97_suspend(chip->ac97);
1393 	snd_ac97_suspend(chip->ac97_sec);
1394 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1395 		chip->saved_regs[i] = inw(chip->port + saved_regs[i]);
1396 	/* FIXME: tea575x suspend */
1397 
1398 	pci_disable_device(pci);
1399 	pci_save_state(pci);
1400 	pci_set_power_state(pci, PCI_D3hot);
1401 	return 0;
1402 }
1403 
1404 static int snd_fm801_resume(struct device *dev)
1405 {
1406 	struct pci_dev *pci = to_pci_dev(dev);
1407 	struct snd_card *card = dev_get_drvdata(dev);
1408 	struct fm801 *chip = card->private_data;
1409 	int i;
1410 
1411 	pci_set_power_state(pci, PCI_D0);
1412 	pci_restore_state(pci);
1413 	if (pci_enable_device(pci) < 0) {
1414 		printk(KERN_ERR "fm801: pci_enable_device failed, "
1415 		       "disabling device\n");
1416 		snd_card_disconnect(card);
1417 		return -EIO;
1418 	}
1419 	pci_set_master(pci);
1420 
1421 	snd_fm801_chip_init(chip, 1);
1422 	snd_ac97_resume(chip->ac97);
1423 	snd_ac97_resume(chip->ac97_sec);
1424 	for (i = 0; i < ARRAY_SIZE(saved_regs); i++)
1425 		outw(chip->saved_regs[i], chip->port + saved_regs[i]);
1426 
1427 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1428 	return 0;
1429 }
1430 
1431 static SIMPLE_DEV_PM_OPS(snd_fm801_pm, snd_fm801_suspend, snd_fm801_resume);
1432 #define SND_FM801_PM_OPS	&snd_fm801_pm
1433 #else
1434 #define SND_FM801_PM_OPS	NULL
1435 #endif /* CONFIG_PM_SLEEP */
1436 
1437 static struct pci_driver fm801_driver = {
1438 	.name = KBUILD_MODNAME,
1439 	.id_table = snd_fm801_ids,
1440 	.probe = snd_card_fm801_probe,
1441 	.remove = snd_card_fm801_remove,
1442 	.driver = {
1443 		.pm = SND_FM801_PM_OPS,
1444 	},
1445 };
1446 
1447 module_pci_driver(fm801_driver);
1448