als300.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
  4 *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
  5 *
  6 *  TODO
  7 *  4 channel playback for ALS300+
  8 *  gameport
  9 *  mpu401
 10 *  opl3
 11 *
 12 *  NOTES
 13 *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
 14 *  the position in the current period, NOT the whole buffer. It is important
 15 *  to know which period we are in so we can calculate the correct pointer.
 16 *  This is why we always use 2 periods. We can then use a flip-flop variable
 17 *  to keep track of what period we are in.
 18 */
 19
 20#include <linux/delay.h>
 21#include <linux/init.h>
 22#include <linux/module.h>
 23#include <linux/pci.h>
 24#include <linux/dma-mapping.h>
 25#include <linux/interrupt.h>
 26#include <linux/slab.h>
 27#include <linux/io.h>
 28
 29#include <sound/core.h>
 30#include <sound/control.h>
 31#include <sound/initval.h>
 32#include <sound/pcm.h>
 33#include <sound/pcm_params.h>
 34#include <sound/ac97_codec.h>
 35#include <sound/opl3.h>
 36
 37/* snd_als300_set_irq_flag */
 38#define IRQ_DISABLE		0
 39#define IRQ_ENABLE		1
 40
 41/* I/O port layout */
 42#define AC97_ACCESS		0x00
 43#define AC97_READ		0x04
 44#define AC97_STATUS		0x06
 45#define   AC97_DATA_AVAIL		(1<<6)
 46#define   AC97_BUSY			(1<<7)
 47#define ALS300_IRQ_STATUS	0x07		/* ALS300 Only */
 48#define   IRQ_PLAYBACK			(1<<3)
 49#define   IRQ_CAPTURE			(1<<2)
 50#define GCR_DATA		0x08
 51#define GCR_INDEX		0x0C
 52#define ALS300P_DRAM_IRQ_STATUS	0x0D		/* ALS300+ Only */
 53#define MPU_IRQ_STATUS		0x0E		/* ALS300 Rev. E+, ALS300+ */
 54#define ALS300P_IRQ_STATUS	0x0F		/* ALS300+ Only */
 55
 56/* General Control Registers */
 57#define PLAYBACK_START		0x80
 58#define PLAYBACK_END		0x81
 59#define PLAYBACK_CONTROL	0x82
 60#define   TRANSFER_START		(1<<16)
 61#define   FIFO_PAUSE			(1<<17)
 62#define RECORD_START		0x83
 63#define RECORD_END		0x84
 64#define RECORD_CONTROL		0x85
 65#define DRAM_WRITE_CONTROL	0x8B
 66#define   WRITE_TRANS_START		(1<<16)
 67#define   DRAM_MODE_2			(1<<17)
 68#define MISC_CONTROL		0x8C
 69#define   IRQ_SET_BIT			(1<<15)
 70#define   VMUTE_NORMAL			(1<<20)
 71#define   MMUTE_NORMAL			(1<<21)
 72#define MUS_VOC_VOL		0x8E
 73#define PLAYBACK_BLOCK_COUNTER	0x9A
 74#define RECORD_BLOCK_COUNTER	0x9B
 75
 76#define DEBUG_PLAY_REC	0
 77
 78#if DEBUG_PLAY_REC
 79#define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
 80#else
 81#define snd_als300_dbgplay(format, args...)
 82#endif		
 83
 84enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
 85
 86MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
 87MODULE_DESCRIPTION("Avance Logic ALS300");
 88MODULE_LICENSE("GPL");
 89
 90static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 91static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 92static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 93
 94module_param_array(index, int, NULL, 0444);
 95MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
 96module_param_array(id, charp, NULL, 0444);
 97MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
 98module_param_array(enable, bool, NULL, 0444);
 99MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
100
101struct snd_als300 {
102	unsigned long port;
103	spinlock_t reg_lock;
104	struct snd_card *card;
105	struct pci_dev *pci;
106
107	struct snd_pcm *pcm;
108	struct snd_pcm_substream *playback_substream;
109	struct snd_pcm_substream *capture_substream;
110
111	struct snd_ac97 *ac97;
112	struct snd_opl3 *opl3;
113
114	struct resource *res_port;
115
116	int irq;
117
118	int chip_type; /* ALS300 or ALS300+ */
119
120	char revision;	
121};
122
123struct snd_als300_substream_data {
124	int period_flipflop;
125	int control_register;
126	int block_counter_register;
127};
128
129static const struct pci_device_id snd_als300_ids[] = {
130	{ 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
131	{ 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
132	{ 0, }
133};
134
135MODULE_DEVICE_TABLE(pci, snd_als300_ids);
136
137static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
138{
139	outb(reg, port+GCR_INDEX);
140	return inl(port+GCR_DATA);
141}
142
143static inline void snd_als300_gcr_write(unsigned long port,
144						unsigned short reg, u32 val)
145{
146	outb(reg, port+GCR_INDEX);
147	outl(val, port+GCR_DATA);
148}
149
150/* Enable/Disable Interrupts */
151static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
152{
153	u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
154
155	/* boolean XOR check, since old vs. new hardware have
156	   directly reversed bit setting for ENABLE and DISABLE.
157	   ALS300+ acts like newer versions of ALS300 */
158	if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
159						(cmd == IRQ_ENABLE)) == 0)
160		tmp |= IRQ_SET_BIT;
161	else
162		tmp &= ~IRQ_SET_BIT;
163	snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
164}
165
166static void snd_als300_free(struct snd_card *card)
167{
168	struct snd_als300 *chip = card->private_data;
169
170	snd_als300_set_irq_flag(chip, IRQ_DISABLE);
171}
172
173static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
174{
175	u8 status;
176	struct snd_als300 *chip = dev_id;
177	struct snd_als300_substream_data *data;
178
179	status = inb(chip->port+ALS300_IRQ_STATUS);
180	if (!status) /* shared IRQ, for different device?? Exit ASAP! */
181		return IRQ_NONE;
182
183	/* ACK everything ASAP */
184	outb(status, chip->port+ALS300_IRQ_STATUS);
185	if (status & IRQ_PLAYBACK) {
186		if (chip->pcm && chip->playback_substream) {
187			data = chip->playback_substream->runtime->private_data;
188			data->period_flipflop ^= 1;
189			snd_pcm_period_elapsed(chip->playback_substream);
190			snd_als300_dbgplay("IRQ_PLAYBACK\n");
191		}
192	}
193	if (status & IRQ_CAPTURE) {
194		if (chip->pcm && chip->capture_substream) {
195			data = chip->capture_substream->runtime->private_data;
196			data->period_flipflop ^= 1;
197			snd_pcm_period_elapsed(chip->capture_substream);
198			snd_als300_dbgplay("IRQ_CAPTURE\n");
199		}
200	}
201	return IRQ_HANDLED;
202}
203
204static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
205{
206	u8 general, mpu, dram;
207	struct snd_als300 *chip = dev_id;
208	struct snd_als300_substream_data *data;
209	
210	general = inb(chip->port+ALS300P_IRQ_STATUS);
211	mpu = inb(chip->port+MPU_IRQ_STATUS);
212	dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
213
214	/* shared IRQ, for different device?? Exit ASAP! */
215	if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
216		return IRQ_NONE;
217
218	if (general & IRQ_PLAYBACK) {
219		if (chip->pcm && chip->playback_substream) {
220			outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
221			data = chip->playback_substream->runtime->private_data;
222			data->period_flipflop ^= 1;
223			snd_pcm_period_elapsed(chip->playback_substream);
224			snd_als300_dbgplay("IRQ_PLAYBACK\n");
225		}
226	}
227	if (general & IRQ_CAPTURE) {
228		if (chip->pcm && chip->capture_substream) {
229			outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
230			data = chip->capture_substream->runtime->private_data;
231			data->period_flipflop ^= 1;
232			snd_pcm_period_elapsed(chip->capture_substream);
233			snd_als300_dbgplay("IRQ_CAPTURE\n");
234		}
235	}
236	/* FIXME: Ack other interrupt types. Not important right now as
237	 * those other devices aren't enabled. */
238	return IRQ_HANDLED;
239}
240
241static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
242							unsigned short reg)
243{
244	int i;
245	struct snd_als300 *chip = ac97->private_data;
246
247	for (i = 0; i < 1000; i++) {
248		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
249			break;
250		udelay(10);
251	}
252	outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
253
254	for (i = 0; i < 1000; i++) {
255		if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
256			break;
257		udelay(10);
258	}
259	return inw(chip->port+AC97_READ);
260}
261
262static void snd_als300_ac97_write(struct snd_ac97 *ac97,
263				unsigned short reg, unsigned short val)
264{
265	int i;
266	struct snd_als300 *chip = ac97->private_data;
267
268	for (i = 0; i < 1000; i++) {
269		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
270			break;
271		udelay(10);
272	}
273	outl((reg << 24) | val, chip->port+AC97_ACCESS);
274}
275
276static int snd_als300_ac97(struct snd_als300 *chip)
277{
278	struct snd_ac97_bus *bus;
279	struct snd_ac97_template ac97;
280	int err;
281	static const struct snd_ac97_bus_ops ops = {
282		.write = snd_als300_ac97_write,
283		.read = snd_als300_ac97_read,
284	};
285
286	err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);
287	if (err < 0)
288		return err;
289
290	memset(&ac97, 0, sizeof(ac97));
291	ac97.private_data = chip;
292
293	return snd_ac97_mixer(bus, &ac97, &chip->ac97);
294}
295
296/* hardware definition
297 *
298 * In AC97 mode, we always use 48k/16bit/stereo.
299 * Any request to change data type is ignored by
300 * the card when it is running outside of legacy
301 * mode.
302 */
303static const struct snd_pcm_hardware snd_als300_playback_hw =
304{
305	.info =			(SNDRV_PCM_INFO_MMAP |
306				SNDRV_PCM_INFO_INTERLEAVED |
307				SNDRV_PCM_INFO_PAUSE |
308				SNDRV_PCM_INFO_MMAP_VALID),
309	.formats =		SNDRV_PCM_FMTBIT_S16,
310	.rates =		SNDRV_PCM_RATE_48000,
311	.rate_min =		48000,
312	.rate_max =		48000,
313	.channels_min =		2,
314	.channels_max =		2,
315	.buffer_bytes_max =	64 * 1024,
316	.period_bytes_min =	64,
317	.period_bytes_max =	32 * 1024,
318	.periods_min =		2,
319	.periods_max =		2,
320};
321
322static const struct snd_pcm_hardware snd_als300_capture_hw =
323{
324	.info =			(SNDRV_PCM_INFO_MMAP |
325				SNDRV_PCM_INFO_INTERLEAVED |
326				SNDRV_PCM_INFO_PAUSE |
327				SNDRV_PCM_INFO_MMAP_VALID),
328	.formats =		SNDRV_PCM_FMTBIT_S16,
329	.rates =		SNDRV_PCM_RATE_48000,
330	.rate_min =		48000,
331	.rate_max =		48000,
332	.channels_min =		2,
333	.channels_max =		2,
334	.buffer_bytes_max =	64 * 1024,
335	.period_bytes_min =	64,
336	.period_bytes_max =	32 * 1024,
337	.periods_min =		2,
338	.periods_max =		2,
339};
340
341static int snd_als300_playback_open(struct snd_pcm_substream *substream)
342{
343	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
344	struct snd_pcm_runtime *runtime = substream->runtime;
345	struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
346								GFP_KERNEL);
347
348	if (!data)
349		return -ENOMEM;
350	chip->playback_substream = substream;
351	runtime->hw = snd_als300_playback_hw;
352	runtime->private_data = data;
353	data->control_register = PLAYBACK_CONTROL;
354	data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
355	return 0;
356}
357
358static int snd_als300_playback_close(struct snd_pcm_substream *substream)
359{
360	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
361	struct snd_als300_substream_data *data;
362
363	data = substream->runtime->private_data;
364	kfree(data);
365	chip->playback_substream = NULL;
366	return 0;
367}
368
369static int snd_als300_capture_open(struct snd_pcm_substream *substream)
370{
371	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
372	struct snd_pcm_runtime *runtime = substream->runtime;
373	struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
374								GFP_KERNEL);
375
376	if (!data)
377		return -ENOMEM;
378	chip->capture_substream = substream;
379	runtime->hw = snd_als300_capture_hw;
380	runtime->private_data = data;
381	data->control_register = RECORD_CONTROL;
382	data->block_counter_register = RECORD_BLOCK_COUNTER;
383	return 0;
384}
385
386static int snd_als300_capture_close(struct snd_pcm_substream *substream)
387{
388	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
389	struct snd_als300_substream_data *data;
390
391	data = substream->runtime->private_data;
392	kfree(data);
393	chip->capture_substream = NULL;
394	return 0;
395}
396
397static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
398{
399	u32 tmp;
400	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
401	struct snd_pcm_runtime *runtime = substream->runtime;
402	unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
403	unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
404	
405	guard(spinlock_irq)(&chip->reg_lock);
406	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
407	tmp &= ~TRANSFER_START;
408
409	snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
410						period_bytes, buffer_bytes);
411	
412	/* set block size */
413	tmp &= 0xffff0000;
414	tmp |= period_bytes - 1;
415	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
416
417	/* set dma area */
418	snd_als300_gcr_write(chip->port, PLAYBACK_START,
419					runtime->dma_addr);
420	snd_als300_gcr_write(chip->port, PLAYBACK_END,
421					runtime->dma_addr + buffer_bytes - 1);
422	return 0;
423}
424
425static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
426{
427	u32 tmp;
428	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
429	struct snd_pcm_runtime *runtime = substream->runtime;
430	unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
431	unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
432
433	guard(spinlock_irq)(&chip->reg_lock);
434	tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
435	tmp &= ~TRANSFER_START;
436
437	snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
438							buffer_bytes);
439
440	/* set block size */
441	tmp &= 0xffff0000;
442	tmp |= period_bytes - 1;
443
444	/* set dma area */
445	snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
446	snd_als300_gcr_write(chip->port, RECORD_START,
447					runtime->dma_addr);
448	snd_als300_gcr_write(chip->port, RECORD_END,
449					runtime->dma_addr + buffer_bytes - 1);
450	return 0;
451}
452
453static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
454{
455	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
456	u32 tmp;
457	struct snd_als300_substream_data *data;
458	unsigned short reg;
459	int ret = 0;
460
461	data = substream->runtime->private_data;
462	reg = data->control_register;
463
464	guard(spinlock)(&chip->reg_lock);
465	switch (cmd) {
466	case SNDRV_PCM_TRIGGER_START:
467	case SNDRV_PCM_TRIGGER_RESUME:
468		tmp = snd_als300_gcr_read(chip->port, reg);
469		data->period_flipflop = 1;
470		snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
471		snd_als300_dbgplay("TRIGGER START\n");
472		break;
473	case SNDRV_PCM_TRIGGER_STOP:
474	case SNDRV_PCM_TRIGGER_SUSPEND:
475		tmp = snd_als300_gcr_read(chip->port, reg);
476		snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
477		snd_als300_dbgplay("TRIGGER STOP\n");
478		break;
479	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
480		tmp = snd_als300_gcr_read(chip->port, reg);
481		snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
482		snd_als300_dbgplay("TRIGGER PAUSE\n");
483		break;
484	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
485		tmp = snd_als300_gcr_read(chip->port, reg);
486		snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
487		snd_als300_dbgplay("TRIGGER RELEASE\n");
488		break;
489	default:
490		snd_als300_dbgplay("TRIGGER INVALID\n");
491		ret = -EINVAL;
492	}
493	return ret;
494}
495
496static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
497{
498	u16 current_ptr;
499	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
500	struct snd_als300_substream_data *data;
501	unsigned short period_bytes;
502
503	data = substream->runtime->private_data;
504	period_bytes = snd_pcm_lib_period_bytes(substream);
505	
506	scoped_guard(spinlock, &chip->reg_lock) {
507		current_ptr = (u16) snd_als300_gcr_read(chip->port,
508							data->block_counter_register) + 4;
509	}
510	if (current_ptr > period_bytes)
511		current_ptr = 0;
512	else
513		current_ptr = period_bytes - current_ptr;
514
515	if (data->period_flipflop == 0)
516		current_ptr += period_bytes;
517	snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
518	return bytes_to_frames(substream->runtime, current_ptr);
519}
520
521static const struct snd_pcm_ops snd_als300_playback_ops = {
522	.open =		snd_als300_playback_open,
523	.close =	snd_als300_playback_close,
524	.prepare =	snd_als300_playback_prepare,
525	.trigger =	snd_als300_trigger,
526	.pointer =	snd_als300_pointer,
527};
528
529static const struct snd_pcm_ops snd_als300_capture_ops = {
530	.open =		snd_als300_capture_open,
531	.close =	snd_als300_capture_close,
532	.prepare =	snd_als300_capture_prepare,
533	.trigger =	snd_als300_trigger,
534	.pointer =	snd_als300_pointer,
535};
536
537static int snd_als300_new_pcm(struct snd_als300 *chip)
538{
539	struct snd_pcm *pcm;
540	int err;
541
542	err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
543	if (err < 0)
544		return err;
545	pcm->private_data = chip;
546	strscpy(pcm->name, "ALS300");
547	chip->pcm = pcm;
548
549	/* set operators */
550	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
551				&snd_als300_playback_ops);
552	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
553				&snd_als300_capture_ops);
554
555	/* pre-allocation of buffers */
556	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
557				       64*1024, 64*1024);
558	return 0;
559}
560
561static void snd_als300_init(struct snd_als300 *chip)
562{
563	u32 tmp;
564	
565	guard(spinlock_irqsave)(&chip->reg_lock);
566	chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
567								& 0x0000000F;
568	/* Setup DRAM */
569	tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
570	snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
571						(tmp | DRAM_MODE_2)
572						& ~WRITE_TRANS_START);
573
574	/* Enable IRQ output */
575	snd_als300_set_irq_flag(chip, IRQ_ENABLE);
576
577	/* Unmute hardware devices so their outputs get routed to
578	 * the onboard mixer */
579	tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
580	snd_als300_gcr_write(chip->port, MISC_CONTROL,
581			tmp | VMUTE_NORMAL | MMUTE_NORMAL);
582
583	/* Reset volumes */
584	snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
585
586	/* Make sure playback transfer is stopped */
587	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
588	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
589			tmp & ~TRANSFER_START);
590}
591
592static int snd_als300_create(struct snd_card *card,
593			     struct pci_dev *pci, int chip_type)
594{
595	struct snd_als300 *chip = card->private_data;
596	void *irq_handler;
597	int err;
598
599	err = pcim_enable_device(pci);
600	if (err < 0)
601		return err;
602
603	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
604		dev_err(card->dev, "error setting 28bit DMA mask\n");
605		return -ENXIO;
606	}
607	pci_set_master(pci);
608
609	chip->card = card;
610	chip->pci = pci;
611	chip->irq = -1;
612	chip->chip_type = chip_type;
613	spin_lock_init(&chip->reg_lock);
614
615	err = pcim_request_all_regions(pci, "ALS300");
616	if (err < 0)
617		return err;
618
619	chip->port = pci_resource_start(pci, 0);
620
621	if (chip->chip_type == DEVICE_ALS300_PLUS)
622		irq_handler = snd_als300plus_interrupt;
623	else
624		irq_handler = snd_als300_interrupt;
625
626	if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,
627			     KBUILD_MODNAME, chip)) {
628		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
629		return -EBUSY;
630	}
631	chip->irq = pci->irq;
632	card->sync_irq = chip->irq;
633	card->private_free = snd_als300_free;
634
635	snd_als300_init(chip);
636
637	err = snd_als300_ac97(chip);
638	if (err < 0) {
639		dev_err(card->dev, "Could not create ac97\n");
640		return err;
641	}
642
643	err = snd_als300_new_pcm(chip);
644	if (err < 0) {
645		dev_err(card->dev, "Could not create PCM\n");
646		return err;
647	}
648
649	return 0;
650}
651
652static int snd_als300_suspend(struct device *dev)
653{
654	struct snd_card *card = dev_get_drvdata(dev);
655	struct snd_als300 *chip = card->private_data;
656
657	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
658	snd_ac97_suspend(chip->ac97);
659	return 0;
660}
661
662static int snd_als300_resume(struct device *dev)
663{
664	struct snd_card *card = dev_get_drvdata(dev);
665	struct snd_als300 *chip = card->private_data;
666
667	snd_als300_init(chip);
668	snd_ac97_resume(chip->ac97);
669
670	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
671	return 0;
672}
673
674static DEFINE_SIMPLE_DEV_PM_OPS(snd_als300_pm, snd_als300_suspend, snd_als300_resume);
675
676static int snd_als300_probe(struct pci_dev *pci,
677                             const struct pci_device_id *pci_id)
678{
679	static int dev;
680	struct snd_card *card;
681	struct snd_als300 *chip;
682	int err, chip_type;
683
684	if (dev >= SNDRV_CARDS)
685		return -ENODEV;
686	if (!enable[dev]) {
687		dev++;
688		return -ENOENT;
689	}
690
691	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
692				sizeof(*chip), &card);
693	if (err < 0)
694		return err;
695	chip = card->private_data;
696
697	chip_type = pci_id->driver_data;
698
699	err = snd_als300_create(card, pci, chip_type);
700	if (err < 0)
701		goto error;
702
703	strscpy(card->driver, "ALS300");
704	if (chip->chip_type == DEVICE_ALS300_PLUS)
705		/* don't know much about ALS300+ yet
706		 * print revision number for now */
707		sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
708	else
709		sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
710							chip->revision - 1);
711	sprintf(card->longname, "%s at 0x%lx irq %i",
712				card->shortname, chip->port, chip->irq);
713
714	err = snd_card_register(card);
715	if (err < 0)
716		goto error;
717
718	pci_set_drvdata(pci, card);
719	dev++;
720	return 0;
721
722 error:
723	snd_card_free(card);
724	return err;
725}
726
727static struct pci_driver als300_driver = {
728	.name = KBUILD_MODNAME,
729	.id_table = snd_als300_ids,
730	.probe = snd_als300_probe,
731	.driver = {
732		.pm = &snd_als300_pm,
733	},
734};
735
736module_pci_driver(als300_driver);