1 /*
2  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
3  *  Copyright (C) 2005 by Ash Willis <ashwillis@programmer.net>
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  *  You should have received a copy of the GNU General Public License
16  *  along with this program; if not, write to the Free Software
17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
18  *
19  *  TODO
20  *  4 channel playback for ALS300+
21  *  gameport
22  *  mpu401
23  *  opl3
24  *
25  *  NOTES
26  *  The BLOCK_COUNTER registers for the ALS300(+) return a figure related to
27  *  the position in the current period, NOT the whole buffer. It is important
28  *  to know which period we are in so we can calculate the correct pointer.
29  *  This is why we always use 2 periods. We can then use a flip-flop variable
30  *  to keep track of what period we are in.
31  */
32 
33 #include <linux/delay.h>
34 #include <linux/init.h>
35 #include <linux/module.h>
36 #include <linux/pci.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/interrupt.h>
39 #include <linux/slab.h>
40 
41 #include <asm/io.h>
42 
43 #include <sound/core.h>
44 #include <sound/control.h>
45 #include <sound/initval.h>
46 #include <sound/pcm.h>
47 #include <sound/pcm_params.h>
48 #include <sound/ac97_codec.h>
49 #include <sound/opl3.h>
50 
51 /* snd_als300_set_irq_flag */
52 #define IRQ_DISABLE		0
53 #define IRQ_ENABLE		1
54 
55 /* I/O port layout */
56 #define AC97_ACCESS		0x00
57 #define AC97_READ		0x04
58 #define AC97_STATUS		0x06
59 #define   AC97_DATA_AVAIL		(1<<6)
60 #define   AC97_BUSY			(1<<7)
61 #define ALS300_IRQ_STATUS	0x07		/* ALS300 Only */
62 #define   IRQ_PLAYBACK			(1<<3)
63 #define   IRQ_CAPTURE			(1<<2)
64 #define GCR_DATA		0x08
65 #define GCR_INDEX		0x0C
66 #define ALS300P_DRAM_IRQ_STATUS	0x0D		/* ALS300+ Only */
67 #define MPU_IRQ_STATUS		0x0E		/* ALS300 Rev. E+, ALS300+ */
68 #define ALS300P_IRQ_STATUS	0x0F		/* ALS300+ Only */
69 
70 /* General Control Registers */
71 #define PLAYBACK_START		0x80
72 #define PLAYBACK_END		0x81
73 #define PLAYBACK_CONTROL	0x82
74 #define   TRANSFER_START		(1<<16)
75 #define   FIFO_PAUSE			(1<<17)
76 #define RECORD_START		0x83
77 #define RECORD_END		0x84
78 #define RECORD_CONTROL		0x85
79 #define DRAM_WRITE_CONTROL	0x8B
80 #define   WRITE_TRANS_START		(1<<16)
81 #define   DRAM_MODE_2			(1<<17)
82 #define MISC_CONTROL		0x8C
83 #define   IRQ_SET_BIT			(1<<15)
84 #define   VMUTE_NORMAL			(1<<20)
85 #define   MMUTE_NORMAL			(1<<21)
86 #define MUS_VOC_VOL		0x8E
87 #define PLAYBACK_BLOCK_COUNTER	0x9A
88 #define RECORD_BLOCK_COUNTER	0x9B
89 
90 #define DEBUG_CALLS	0
91 #define DEBUG_PLAY_REC	0
92 
93 #if DEBUG_CALLS
94 #define snd_als300_dbgcalls(format, args...) printk(KERN_DEBUG format, ##args)
95 #define snd_als300_dbgcallenter() printk(KERN_ERR "--> %s\n", __func__)
96 #define snd_als300_dbgcallleave() printk(KERN_ERR "<-- %s\n", __func__)
97 #else
98 #define snd_als300_dbgcalls(format, args...)
99 #define snd_als300_dbgcallenter()
100 #define snd_als300_dbgcallleave()
101 #endif
102 
103 #if DEBUG_PLAY_REC
104 #define snd_als300_dbgplay(format, args...) printk(KERN_ERR format, ##args)
105 #else
106 #define snd_als300_dbgplay(format, args...)
107 #endif
108 
109 enum {DEVICE_ALS300, DEVICE_ALS300_PLUS};
110 
111 MODULE_AUTHOR("Ash Willis <ashwillis@programmer.net>");
112 MODULE_DESCRIPTION("Avance Logic ALS300");
113 MODULE_LICENSE("GPL");
114 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS300},{Avance Logic,ALS300+}}");
115 
116 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
117 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
118 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
119 
120 module_param_array(index, int, NULL, 0444);
121 MODULE_PARM_DESC(index, "Index value for ALS300 sound card.");
122 module_param_array(id, charp, NULL, 0444);
123 MODULE_PARM_DESC(id, "ID string for ALS300 sound card.");
124 module_param_array(enable, bool, NULL, 0444);
125 MODULE_PARM_DESC(enable, "Enable ALS300 sound card.");
126 
127 struct snd_als300 {
128 	unsigned long port;
129 	spinlock_t reg_lock;
130 	struct snd_card *card;
131 	struct pci_dev *pci;
132 
133 	struct snd_pcm *pcm;
134 	struct snd_pcm_substream *playback_substream;
135 	struct snd_pcm_substream *capture_substream;
136 
137 	struct snd_ac97 *ac97;
138 	struct snd_opl3 *opl3;
139 
140 	struct resource *res_port;
141 
142 	int irq;
143 
144 	int chip_type; /* ALS300 or ALS300+ */
145 
146 	char revision;
147 };
148 
149 struct snd_als300_substream_data {
150 	int period_flipflop;
151 	int control_register;
152 	int block_counter_register;
153 };
154 
155 static DEFINE_PCI_DEVICE_TABLE(snd_als300_ids) = {
156 	{ 0x4005, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300 },
157 	{ 0x4005, 0x0308, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALS300_PLUS },
158 	{ 0, }
159 };
160 
161 MODULE_DEVICE_TABLE(pci, snd_als300_ids);
162 
snd_als300_gcr_read(unsigned long port,unsigned short reg)163 static inline u32 snd_als300_gcr_read(unsigned long port, unsigned short reg)
164 {
165 	outb(reg, port+GCR_INDEX);
166 	return inl(port+GCR_DATA);
167 }
168 
snd_als300_gcr_write(unsigned long port,unsigned short reg,u32 val)169 static inline void snd_als300_gcr_write(unsigned long port,
170 						unsigned short reg, u32 val)
171 {
172 	outb(reg, port+GCR_INDEX);
173 	outl(val, port+GCR_DATA);
174 }
175 
176 /* Enable/Disable Interrupts */
snd_als300_set_irq_flag(struct snd_als300 * chip,int cmd)177 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)
178 {
179 	u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
180 	snd_als300_dbgcallenter();
181 
182 	/* boolean XOR check, since old vs. new hardware have
183 	   directly reversed bit setting for ENABLE and DISABLE.
184 	   ALS300+ acts like newer versions of ALS300 */
185 	if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^
186 						(cmd == IRQ_ENABLE)) == 0)
187 		tmp |= IRQ_SET_BIT;
188 	else
189 		tmp &= ~IRQ_SET_BIT;
190 	snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);
191 	snd_als300_dbgcallleave();
192 }
193 
snd_als300_free(struct snd_als300 * chip)194 static int snd_als300_free(struct snd_als300 *chip)
195 {
196 	snd_als300_dbgcallenter();
197 	snd_als300_set_irq_flag(chip, IRQ_DISABLE);
198 	if (chip->irq >= 0)
199 		free_irq(chip->irq, chip);
200 	pci_release_regions(chip->pci);
201 	pci_disable_device(chip->pci);
202 	kfree(chip);
203 	snd_als300_dbgcallleave();
204 	return 0;
205 }
206 
snd_als300_dev_free(struct snd_device * device)207 static int snd_als300_dev_free(struct snd_device *device)
208 {
209 	struct snd_als300 *chip = device->device_data;
210 	return snd_als300_free(chip);
211 }
212 
snd_als300_interrupt(int irq,void * dev_id)213 static irqreturn_t snd_als300_interrupt(int irq, void *dev_id)
214 {
215 	u8 status;
216 	struct snd_als300 *chip = dev_id;
217 	struct snd_als300_substream_data *data;
218 
219 	status = inb(chip->port+ALS300_IRQ_STATUS);
220 	if (!status) /* shared IRQ, for different device?? Exit ASAP! */
221 		return IRQ_NONE;
222 
223 	/* ACK everything ASAP */
224 	outb(status, chip->port+ALS300_IRQ_STATUS);
225 	if (status & IRQ_PLAYBACK) {
226 		if (chip->pcm && chip->playback_substream) {
227 			data = chip->playback_substream->runtime->private_data;
228 			data->period_flipflop ^= 1;
229 			snd_pcm_period_elapsed(chip->playback_substream);
230 			snd_als300_dbgplay("IRQ_PLAYBACK\n");
231 		}
232 	}
233 	if (status & IRQ_CAPTURE) {
234 		if (chip->pcm && chip->capture_substream) {
235 			data = chip->capture_substream->runtime->private_data;
236 			data->period_flipflop ^= 1;
237 			snd_pcm_period_elapsed(chip->capture_substream);
238 			snd_als300_dbgplay("IRQ_CAPTURE\n");
239 		}
240 	}
241 	return IRQ_HANDLED;
242 }
243 
snd_als300plus_interrupt(int irq,void * dev_id)244 static irqreturn_t snd_als300plus_interrupt(int irq, void *dev_id)
245 {
246 	u8 general, mpu, dram;
247 	struct snd_als300 *chip = dev_id;
248 	struct snd_als300_substream_data *data;
249 
250 	general = inb(chip->port+ALS300P_IRQ_STATUS);
251 	mpu = inb(chip->port+MPU_IRQ_STATUS);
252 	dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);
253 
254 	/* shared IRQ, for different device?? Exit ASAP! */
255 	if ((general == 0) && ((mpu & 0x80) == 0) && ((dram & 0x01) == 0))
256 		return IRQ_NONE;
257 
258 	if (general & IRQ_PLAYBACK) {
259 		if (chip->pcm && chip->playback_substream) {
260 			outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);
261 			data = chip->playback_substream->runtime->private_data;
262 			data->period_flipflop ^= 1;
263 			snd_pcm_period_elapsed(chip->playback_substream);
264 			snd_als300_dbgplay("IRQ_PLAYBACK\n");
265 		}
266 	}
267 	if (general & IRQ_CAPTURE) {
268 		if (chip->pcm && chip->capture_substream) {
269 			outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);
270 			data = chip->capture_substream->runtime->private_data;
271 			data->period_flipflop ^= 1;
272 			snd_pcm_period_elapsed(chip->capture_substream);
273 			snd_als300_dbgplay("IRQ_CAPTURE\n");
274 		}
275 	}
276 	/* FIXME: Ack other interrupt types. Not important right now as
277 	 * those other devices aren't enabled. */
278 	return IRQ_HANDLED;
279 }
280 
snd_als300_remove(struct pci_dev * pci)281 static void __devexit snd_als300_remove(struct pci_dev *pci)
282 {
283 	snd_als300_dbgcallenter();
284 	snd_card_free(pci_get_drvdata(pci));
285 	pci_set_drvdata(pci, NULL);
286 	snd_als300_dbgcallleave();
287 }
288 
snd_als300_ac97_read(struct snd_ac97 * ac97,unsigned short reg)289 static unsigned short snd_als300_ac97_read(struct snd_ac97 *ac97,
290 							unsigned short reg)
291 {
292 	int i;
293 	struct snd_als300 *chip = ac97->private_data;
294 
295 	for (i = 0; i < 1000; i++) {
296 		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
297 			break;
298 		udelay(10);
299 	}
300 	outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);
301 
302 	for (i = 0; i < 1000; i++) {
303 		if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)
304 			break;
305 		udelay(10);
306 	}
307 	return inw(chip->port+AC97_READ);
308 }
309 
snd_als300_ac97_write(struct snd_ac97 * ac97,unsigned short reg,unsigned short val)310 static void snd_als300_ac97_write(struct snd_ac97 *ac97,
311 				unsigned short reg, unsigned short val)
312 {
313 	int i;
314 	struct snd_als300 *chip = ac97->private_data;
315 
316 	for (i = 0; i < 1000; i++) {
317 		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)
318 			break;
319 		udelay(10);
320 	}
321 	outl((reg << 24) | val, chip->port+AC97_ACCESS);
322 }
323 
snd_als300_ac97(struct snd_als300 * chip)324 static int snd_als300_ac97(struct snd_als300 *chip)
325 {
326 	struct snd_ac97_bus *bus;
327 	struct snd_ac97_template ac97;
328 	int err;
329 	static struct snd_ac97_bus_ops ops = {
330 		.write = snd_als300_ac97_write,
331 		.read = snd_als300_ac97_read,
332 	};
333 
334 	snd_als300_dbgcallenter();
335 	if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus)) < 0)
336 		return err;
337 
338 	memset(&ac97, 0, sizeof(ac97));
339 	ac97.private_data = chip;
340 
341 	snd_als300_dbgcallleave();
342 	return snd_ac97_mixer(bus, &ac97, &chip->ac97);
343 }
344 
345 /* hardware definition
346  *
347  * In AC97 mode, we always use 48k/16bit/stereo.
348  * Any request to change data type is ignored by
349  * the card when it is running outside of legacy
350  * mode.
351  */
352 static struct snd_pcm_hardware snd_als300_playback_hw =
353 {
354 	.info =			(SNDRV_PCM_INFO_MMAP |
355 				SNDRV_PCM_INFO_INTERLEAVED |
356 				SNDRV_PCM_INFO_PAUSE |
357 				SNDRV_PCM_INFO_MMAP_VALID),
358 	.formats =		SNDRV_PCM_FMTBIT_S16,
359 	.rates =		SNDRV_PCM_RATE_48000,
360 	.rate_min =		48000,
361 	.rate_max =		48000,
362 	.channels_min =		2,
363 	.channels_max =		2,
364 	.buffer_bytes_max =	64 * 1024,
365 	.period_bytes_min =	64,
366 	.period_bytes_max =	32 * 1024,
367 	.periods_min =		2,
368 	.periods_max =		2,
369 };
370 
371 static struct snd_pcm_hardware snd_als300_capture_hw =
372 {
373 	.info =			(SNDRV_PCM_INFO_MMAP |
374 				SNDRV_PCM_INFO_INTERLEAVED |
375 				SNDRV_PCM_INFO_PAUSE |
376 				SNDRV_PCM_INFO_MMAP_VALID),
377 	.formats =		SNDRV_PCM_FMTBIT_S16,
378 	.rates =		SNDRV_PCM_RATE_48000,
379 	.rate_min =		48000,
380 	.rate_max =		48000,
381 	.channels_min =		2,
382 	.channels_max =		2,
383 	.buffer_bytes_max =	64 * 1024,
384 	.period_bytes_min =	64,
385 	.period_bytes_max =	32 * 1024,
386 	.periods_min =		2,
387 	.periods_max =		2,
388 };
389 
snd_als300_playback_open(struct snd_pcm_substream * substream)390 static int snd_als300_playback_open(struct snd_pcm_substream *substream)
391 {
392 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
393 	struct snd_pcm_runtime *runtime = substream->runtime;
394 	struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
395 								GFP_KERNEL);
396 
397 	snd_als300_dbgcallenter();
398 	chip->playback_substream = substream;
399 	runtime->hw = snd_als300_playback_hw;
400 	runtime->private_data = data;
401 	data->control_register = PLAYBACK_CONTROL;
402 	data->block_counter_register = PLAYBACK_BLOCK_COUNTER;
403 	snd_als300_dbgcallleave();
404 	return 0;
405 }
406 
snd_als300_playback_close(struct snd_pcm_substream * substream)407 static int snd_als300_playback_close(struct snd_pcm_substream *substream)
408 {
409 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
410 	struct snd_als300_substream_data *data;
411 
412 	data = substream->runtime->private_data;
413 	snd_als300_dbgcallenter();
414 	kfree(data);
415 	chip->playback_substream = NULL;
416 	snd_pcm_lib_free_pages(substream);
417 	snd_als300_dbgcallleave();
418 	return 0;
419 }
420 
snd_als300_capture_open(struct snd_pcm_substream * substream)421 static int snd_als300_capture_open(struct snd_pcm_substream *substream)
422 {
423 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
424 	struct snd_pcm_runtime *runtime = substream->runtime;
425 	struct snd_als300_substream_data *data = kzalloc(sizeof(*data),
426 								GFP_KERNEL);
427 
428 	snd_als300_dbgcallenter();
429 	chip->capture_substream = substream;
430 	runtime->hw = snd_als300_capture_hw;
431 	runtime->private_data = data;
432 	data->control_register = RECORD_CONTROL;
433 	data->block_counter_register = RECORD_BLOCK_COUNTER;
434 	snd_als300_dbgcallleave();
435 	return 0;
436 }
437 
snd_als300_capture_close(struct snd_pcm_substream * substream)438 static int snd_als300_capture_close(struct snd_pcm_substream *substream)
439 {
440 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
441 	struct snd_als300_substream_data *data;
442 
443 	data = substream->runtime->private_data;
444 	snd_als300_dbgcallenter();
445 	kfree(data);
446 	chip->capture_substream = NULL;
447 	snd_pcm_lib_free_pages(substream);
448 	snd_als300_dbgcallleave();
449 	return 0;
450 }
451 
snd_als300_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)452 static int snd_als300_pcm_hw_params(struct snd_pcm_substream *substream,
453 				    struct snd_pcm_hw_params *hw_params)
454 {
455 	return snd_pcm_lib_malloc_pages(substream,
456 					params_buffer_bytes(hw_params));
457 }
458 
snd_als300_pcm_hw_free(struct snd_pcm_substream * substream)459 static int snd_als300_pcm_hw_free(struct snd_pcm_substream *substream)
460 {
461 	return snd_pcm_lib_free_pages(substream);
462 }
463 
snd_als300_playback_prepare(struct snd_pcm_substream * substream)464 static int snd_als300_playback_prepare(struct snd_pcm_substream *substream)
465 {
466 	u32 tmp;
467 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
468 	struct snd_pcm_runtime *runtime = substream->runtime;
469 	unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
470 	unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
471 
472 	snd_als300_dbgcallenter();
473 	spin_lock_irq(&chip->reg_lock);
474 	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
475 	tmp &= ~TRANSFER_START;
476 
477 	snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n",
478 						period_bytes, buffer_bytes);
479 
480 	/* set block size */
481 	tmp &= 0xffff0000;
482 	tmp |= period_bytes - 1;
483 	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);
484 
485 	/* set dma area */
486 	snd_als300_gcr_write(chip->port, PLAYBACK_START,
487 					runtime->dma_addr);
488 	snd_als300_gcr_write(chip->port, PLAYBACK_END,
489 					runtime->dma_addr + buffer_bytes - 1);
490 	spin_unlock_irq(&chip->reg_lock);
491 	snd_als300_dbgcallleave();
492 	return 0;
493 }
494 
snd_als300_capture_prepare(struct snd_pcm_substream * substream)495 static int snd_als300_capture_prepare(struct snd_pcm_substream *substream)
496 {
497 	u32 tmp;
498 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
499 	struct snd_pcm_runtime *runtime = substream->runtime;
500 	unsigned short period_bytes = snd_pcm_lib_period_bytes(substream);
501 	unsigned short buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
502 
503 	snd_als300_dbgcallenter();
504 	spin_lock_irq(&chip->reg_lock);
505 	tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);
506 	tmp &= ~TRANSFER_START;
507 
508 	snd_als300_dbgplay("Period bytes: %d Buffer bytes %d\n", period_bytes,
509 							buffer_bytes);
510 
511 	/* set block size */
512 	tmp &= 0xffff0000;
513 	tmp |= period_bytes - 1;
514 
515 	/* set dma area */
516 	snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);
517 	snd_als300_gcr_write(chip->port, RECORD_START,
518 					runtime->dma_addr);
519 	snd_als300_gcr_write(chip->port, RECORD_END,
520 					runtime->dma_addr + buffer_bytes - 1);
521 	spin_unlock_irq(&chip->reg_lock);
522 	snd_als300_dbgcallleave();
523 	return 0;
524 }
525 
snd_als300_trigger(struct snd_pcm_substream * substream,int cmd)526 static int snd_als300_trigger(struct snd_pcm_substream *substream, int cmd)
527 {
528 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
529 	u32 tmp;
530 	struct snd_als300_substream_data *data;
531 	unsigned short reg;
532 	int ret = 0;
533 
534 	data = substream->runtime->private_data;
535 	reg = data->control_register;
536 
537 	snd_als300_dbgcallenter();
538 	spin_lock(&chip->reg_lock);
539 	switch (cmd) {
540 	case SNDRV_PCM_TRIGGER_START:
541 	case SNDRV_PCM_TRIGGER_RESUME:
542 		tmp = snd_als300_gcr_read(chip->port, reg);
543 		data->period_flipflop = 1;
544 		snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);
545 		snd_als300_dbgplay("TRIGGER START\n");
546 		break;
547 	case SNDRV_PCM_TRIGGER_STOP:
548 	case SNDRV_PCM_TRIGGER_SUSPEND:
549 		tmp = snd_als300_gcr_read(chip->port, reg);
550 		snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);
551 		snd_als300_dbgplay("TRIGGER STOP\n");
552 		break;
553 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
554 		tmp = snd_als300_gcr_read(chip->port, reg);
555 		snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);
556 		snd_als300_dbgplay("TRIGGER PAUSE\n");
557 		break;
558 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
559 		tmp = snd_als300_gcr_read(chip->port, reg);
560 		snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);
561 		snd_als300_dbgplay("TRIGGER RELEASE\n");
562 		break;
563 	default:
564 		snd_als300_dbgplay("TRIGGER INVALID\n");
565 		ret = -EINVAL;
566 	}
567 	spin_unlock(&chip->reg_lock);
568 	snd_als300_dbgcallleave();
569 	return ret;
570 }
571 
snd_als300_pointer(struct snd_pcm_substream * substream)572 static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
573 {
574 	u16 current_ptr;
575 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);
576 	struct snd_als300_substream_data *data;
577 	unsigned short period_bytes;
578 
579 	data = substream->runtime->private_data;
580 	period_bytes = snd_pcm_lib_period_bytes(substream);
581 
582 	snd_als300_dbgcallenter();
583 	spin_lock(&chip->reg_lock);
584 	current_ptr = (u16) snd_als300_gcr_read(chip->port,
585 					data->block_counter_register) + 4;
586 	spin_unlock(&chip->reg_lock);
587 	if (current_ptr > period_bytes)
588 		current_ptr = 0;
589 	else
590 		current_ptr = period_bytes - current_ptr;
591 
592 	if (data->period_flipflop == 0)
593 		current_ptr += period_bytes;
594 	snd_als300_dbgplay("Pointer (bytes): %d\n", current_ptr);
595 	snd_als300_dbgcallleave();
596 	return bytes_to_frames(substream->runtime, current_ptr);
597 }
598 
599 static struct snd_pcm_ops snd_als300_playback_ops = {
600 	.open =		snd_als300_playback_open,
601 	.close =	snd_als300_playback_close,
602 	.ioctl =	snd_pcm_lib_ioctl,
603 	.hw_params =	snd_als300_pcm_hw_params,
604 	.hw_free =	snd_als300_pcm_hw_free,
605 	.prepare =	snd_als300_playback_prepare,
606 	.trigger =	snd_als300_trigger,
607 	.pointer =	snd_als300_pointer,
608 };
609 
610 static struct snd_pcm_ops snd_als300_capture_ops = {
611 	.open =		snd_als300_capture_open,
612 	.close =	snd_als300_capture_close,
613 	.ioctl =	snd_pcm_lib_ioctl,
614 	.hw_params =	snd_als300_pcm_hw_params,
615 	.hw_free =	snd_als300_pcm_hw_free,
616 	.prepare =	snd_als300_capture_prepare,
617 	.trigger =	snd_als300_trigger,
618 	.pointer =	snd_als300_pointer,
619 };
620 
snd_als300_new_pcm(struct snd_als300 * chip)621 static int __devinit snd_als300_new_pcm(struct snd_als300 *chip)
622 {
623 	struct snd_pcm *pcm;
624 	int err;
625 
626 	snd_als300_dbgcallenter();
627 	err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);
628 	if (err < 0)
629 		return err;
630 	pcm->private_data = chip;
631 	strcpy(pcm->name, "ALS300");
632 	chip->pcm = pcm;
633 
634 	/* set operators */
635 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
636 				&snd_als300_playback_ops);
637 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
638 				&snd_als300_capture_ops);
639 
640 	/* pre-allocation of buffers */
641 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
642 	snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
643 	snd_als300_dbgcallleave();
644 	return 0;
645 }
646 
snd_als300_init(struct snd_als300 * chip)647 static void snd_als300_init(struct snd_als300 *chip)
648 {
649 	unsigned long flags;
650 	u32 tmp;
651 
652 	snd_als300_dbgcallenter();
653 	spin_lock_irqsave(&chip->reg_lock, flags);
654 	chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)
655 								& 0x0000000F;
656 	/* Setup DRAM */
657 	tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);
658 	snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,
659 						(tmp | DRAM_MODE_2)
660 						& ~WRITE_TRANS_START);
661 
662 	/* Enable IRQ output */
663 	snd_als300_set_irq_flag(chip, IRQ_ENABLE);
664 
665 	/* Unmute hardware devices so their outputs get routed to
666 	 * the onboard mixer */
667 	tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);
668 	snd_als300_gcr_write(chip->port, MISC_CONTROL,
669 			tmp | VMUTE_NORMAL | MMUTE_NORMAL);
670 
671 	/* Reset volumes */
672 	snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);
673 
674 	/* Make sure playback transfer is stopped */
675 	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);
676 	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,
677 			tmp & ~TRANSFER_START);
678 	spin_unlock_irqrestore(&chip->reg_lock, flags);
679 	snd_als300_dbgcallleave();
680 }
681 
snd_als300_create(struct snd_card * card,struct pci_dev * pci,int chip_type,struct snd_als300 ** rchip)682 static int __devinit snd_als300_create(struct snd_card *card,
683 				       struct pci_dev *pci, int chip_type,
684 				       struct snd_als300 **rchip)
685 {
686 	struct snd_als300 *chip;
687 	void *irq_handler;
688 	int err;
689 
690 	static struct snd_device_ops ops = {
691 		.dev_free = snd_als300_dev_free,
692 	};
693 	*rchip = NULL;
694 
695 	snd_als300_dbgcallenter();
696 	if ((err = pci_enable_device(pci)) < 0)
697 		return err;
698 
699 	if (pci_set_dma_mask(pci, DMA_BIT_MASK(28)) < 0 ||
700 		pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(28)) < 0) {
701 		printk(KERN_ERR "error setting 28bit DMA mask\n");
702 		pci_disable_device(pci);
703 		return -ENXIO;
704 	}
705 	pci_set_master(pci);
706 
707 	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
708 	if (chip == NULL) {
709 		pci_disable_device(pci);
710 		return -ENOMEM;
711 	}
712 
713 	chip->card = card;
714 	chip->pci = pci;
715 	chip->irq = -1;
716 	chip->chip_type = chip_type;
717 	spin_lock_init(&chip->reg_lock);
718 
719 	if ((err = pci_request_regions(pci, "ALS300")) < 0) {
720 		kfree(chip);
721 		pci_disable_device(pci);
722 		return err;
723 	}
724 	chip->port = pci_resource_start(pci, 0);
725 
726 	if (chip->chip_type == DEVICE_ALS300_PLUS)
727 		irq_handler = snd_als300plus_interrupt;
728 	else
729 		irq_handler = snd_als300_interrupt;
730 
731 	if (request_irq(pci->irq, irq_handler, IRQF_SHARED,
732 			KBUILD_MODNAME, chip)) {
733 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
734 		snd_als300_free(chip);
735 		return -EBUSY;
736 	}
737 	chip->irq = pci->irq;
738 
739 
740 	snd_als300_init(chip);
741 
742 	err = snd_als300_ac97(chip);
743 	if (err < 0) {
744 		snd_printk(KERN_WARNING "Could not create ac97\n");
745 		snd_als300_free(chip);
746 		return err;
747 	}
748 
749 	if ((err = snd_als300_new_pcm(chip)) < 0) {
750 		snd_printk(KERN_WARNING "Could not create PCM\n");
751 		snd_als300_free(chip);
752 		return err;
753 	}
754 
755 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
756 						chip, &ops)) < 0) {
757 		snd_als300_free(chip);
758 		return err;
759 	}
760 
761 	snd_card_set_dev(card, &pci->dev);
762 
763 	*rchip = chip;
764 	snd_als300_dbgcallleave();
765 	return 0;
766 }
767 
768 #ifdef CONFIG_PM
snd_als300_suspend(struct pci_dev * pci,pm_message_t state)769 static int snd_als300_suspend(struct pci_dev *pci, pm_message_t state)
770 {
771 	struct snd_card *card = pci_get_drvdata(pci);
772 	struct snd_als300 *chip = card->private_data;
773 
774 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
775 	snd_pcm_suspend_all(chip->pcm);
776 	snd_ac97_suspend(chip->ac97);
777 
778 	pci_disable_device(pci);
779 	pci_save_state(pci);
780 	pci_set_power_state(pci, pci_choose_state(pci, state));
781 	return 0;
782 }
783 
snd_als300_resume(struct pci_dev * pci)784 static int snd_als300_resume(struct pci_dev *pci)
785 {
786 	struct snd_card *card = pci_get_drvdata(pci);
787 	struct snd_als300 *chip = card->private_data;
788 
789 	pci_set_power_state(pci, PCI_D0);
790 	pci_restore_state(pci);
791 	if (pci_enable_device(pci) < 0) {
792 		printk(KERN_ERR "als300: pci_enable_device failed, "
793 		       "disabling device\n");
794 		snd_card_disconnect(card);
795 		return -EIO;
796 	}
797 	pci_set_master(pci);
798 
799 	snd_als300_init(chip);
800 	snd_ac97_resume(chip->ac97);
801 
802 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
803 	return 0;
804 }
805 #endif
806 
snd_als300_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)807 static int __devinit snd_als300_probe(struct pci_dev *pci,
808                              const struct pci_device_id *pci_id)
809 {
810 	static int dev;
811 	struct snd_card *card;
812 	struct snd_als300 *chip;
813 	int err, chip_type;
814 
815 	if (dev >= SNDRV_CARDS)
816 		return -ENODEV;
817 	if (!enable[dev]) {
818 		dev++;
819 		return -ENOENT;
820 	}
821 
822 	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
823 
824 	if (err < 0)
825 		return err;
826 
827 	chip_type = pci_id->driver_data;
828 
829 	if ((err = snd_als300_create(card, pci, chip_type, &chip)) < 0) {
830 		snd_card_free(card);
831 		return err;
832 	}
833 	card->private_data = chip;
834 
835 	strcpy(card->driver, "ALS300");
836 	if (chip->chip_type == DEVICE_ALS300_PLUS)
837 		/* don't know much about ALS300+ yet
838 		 * print revision number for now */
839 		sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);
840 	else
841 		sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +
842 							chip->revision - 1);
843 	sprintf(card->longname, "%s at 0x%lx irq %i",
844 				card->shortname, chip->port, chip->irq);
845 
846 	if ((err = snd_card_register(card)) < 0) {
847 		snd_card_free(card);
848 		return err;
849 	}
850 	pci_set_drvdata(pci, card);
851 	dev++;
852 	return 0;
853 }
854 
855 static struct pci_driver driver = {
856 	.name = KBUILD_MODNAME,
857 	.id_table = snd_als300_ids,
858 	.probe = snd_als300_probe,
859 	.remove = __devexit_p(snd_als300_remove),
860 #ifdef CONFIG_PM
861 	.suspend = snd_als300_suspend,
862 	.resume = snd_als300_resume,
863 #endif
864 };
865 
alsa_card_als300_init(void)866 static int __init alsa_card_als300_init(void)
867 {
868 	return pci_register_driver(&driver);
869 }
870 
alsa_card_als300_exit(void)871 static void __exit alsa_card_als300_exit(void)
872 {
873 	pci_unregister_driver(&driver);
874 }
875 
876 module_init(alsa_card_als300_init)
877 module_exit(alsa_card_als300_exit)
878