1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  als300.c - driver for Avance Logic ALS300/ALS300+ soundcards.
16  *  This is why we always use 2 periods. We can then use a flip-flop variable
24 #include <linux/dma-mapping.h>
151 static void snd_als300_set_irq_flag(struct snd_als300 *chip, int cmd)  in snd_als300_set_irq_flag()  argument
153 	u32 tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);  in snd_als300_set_irq_flag()
158 	if (((chip->revision > 5 || chip->chip_type == DEVICE_ALS300_PLUS) ^  in snd_als300_set_irq_flag()
163 	snd_als300_gcr_write(chip->port, MISC_CONTROL, tmp);  in snd_als300_set_irq_flag()
168 	struct snd_als300 *chip = card->private_data;  in snd_als300_free()  local
170 	snd_als300_set_irq_flag(chip, IRQ_DISABLE);  in snd_als300_free()
176 	struct snd_als300 *chip = dev_id;  in snd_als300_interrupt()  local
179 	status = inb(chip->port+ALS300_IRQ_STATUS);  in snd_als300_interrupt()
184 	outb(status, chip->port+ALS300_IRQ_STATUS);  in snd_als300_interrupt()
186 		if (chip->pcm && chip->playback_substream) {  in snd_als300_interrupt()
187 			data = chip->playback_substream->runtime->private_data;  in snd_als300_interrupt()
188 			data->period_flipflop ^= 1;  in snd_als300_interrupt()
189 			snd_pcm_period_elapsed(chip->playback_substream);  in snd_als300_interrupt()
194 		if (chip->pcm && chip->capture_substream) {  in snd_als300_interrupt()
195 			data = chip->capture_substream->runtime->private_data;  in snd_als300_interrupt()
196 			data->period_flipflop ^= 1;  in snd_als300_interrupt()
197 			snd_pcm_period_elapsed(chip->capture_substream);  in snd_als300_interrupt()
207 	struct snd_als300 *chip = dev_id;  in snd_als300plus_interrupt()  local
210 	general = inb(chip->port+ALS300P_IRQ_STATUS);  in snd_als300plus_interrupt()
211 	mpu = inb(chip->port+MPU_IRQ_STATUS);  in snd_als300plus_interrupt()
212 	dram = inb(chip->port+ALS300P_DRAM_IRQ_STATUS);  in snd_als300plus_interrupt()
219 		if (chip->pcm && chip->playback_substream) {  in snd_als300plus_interrupt()
220 			outb(IRQ_PLAYBACK, chip->port+ALS300P_IRQ_STATUS);  in snd_als300plus_interrupt()
221 			data = chip->playback_substream->runtime->private_data;  in snd_als300plus_interrupt()
222 			data->period_flipflop ^= 1;  in snd_als300plus_interrupt()
223 			snd_pcm_period_elapsed(chip->playback_substream);  in snd_als300plus_interrupt()
228 		if (chip->pcm && chip->capture_substream) {  in snd_als300plus_interrupt()
229 			outb(IRQ_CAPTURE, chip->port+ALS300P_IRQ_STATUS);  in snd_als300plus_interrupt()
230 			data = chip->capture_substream->runtime->private_data;  in snd_als300plus_interrupt()
231 			data->period_flipflop ^= 1;  in snd_als300plus_interrupt()
232 			snd_pcm_period_elapsed(chip->capture_substream);  in snd_als300plus_interrupt()
245 	struct snd_als300 *chip = ac97->private_data;  in snd_als300_ac97_read()  local
248 		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)  in snd_als300_ac97_read()
252 	outl((reg << 24) | (1 << 31), chip->port+AC97_ACCESS);  in snd_als300_ac97_read()
255 		if ((inb(chip->port+AC97_STATUS) & (AC97_DATA_AVAIL)) != 0)  in snd_als300_ac97_read()
259 	return inw(chip->port+AC97_READ);  in snd_als300_ac97_read()
266 	struct snd_als300 *chip = ac97->private_data;  in snd_als300_ac97_write()  local
269 		if ((inb(chip->port+AC97_STATUS) & (AC97_BUSY)) == 0)  in snd_als300_ac97_write()
273 	outl((reg << 24) | val, chip->port+AC97_ACCESS);  in snd_als300_ac97_write()
276 static int snd_als300_ac97(struct snd_als300 *chip)  in snd_als300_ac97()  argument
286 	err = snd_ac97_bus(chip->card, 0, &ops, NULL, &bus);  in snd_als300_ac97()
291 	ac97.private_data = chip;  in snd_als300_ac97()
293 	return snd_ac97_mixer(bus, &ac97, &chip->ac97);  in snd_als300_ac97()
343 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_playback_open()  local
344 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_als300_playback_open()
349 		return -ENOMEM;  in snd_als300_playback_open()
350 	chip->playback_substream = substream;  in snd_als300_playback_open()
351 	runtime->hw = snd_als300_playback_hw;  in snd_als300_playback_open()
352 	runtime->private_data = data;  in snd_als300_playback_open()
353 	data->control_register = PLAYBACK_CONTROL;  in snd_als300_playback_open()
354 	data->block_counter_register = PLAYBACK_BLOCK_COUNTER;  in snd_als300_playback_open()
360 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_playback_close()  local
363 	data = substream->runtime->private_data;  in snd_als300_playback_close()
365 	chip->playback_substream = NULL;  in snd_als300_playback_close()
371 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_capture_open()  local
372 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_als300_capture_open()
377 		return -ENOMEM;  in snd_als300_capture_open()
378 	chip->capture_substream = substream;  in snd_als300_capture_open()
379 	runtime->hw = snd_als300_capture_hw;  in snd_als300_capture_open()
380 	runtime->private_data = data;  in snd_als300_capture_open()
381 	data->control_register = RECORD_CONTROL;  in snd_als300_capture_open()
382 	data->block_counter_register = RECORD_BLOCK_COUNTER;  in snd_als300_capture_open()
388 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_capture_close()  local
391 	data = substream->runtime->private_data;  in snd_als300_capture_close()
393 	chip->capture_substream = NULL;  in snd_als300_capture_close()
400 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_playback_prepare()  local
401 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_als300_playback_prepare()
405 	spin_lock_irq(&chip->reg_lock);  in snd_als300_playback_prepare()
406 	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);  in snd_als300_playback_prepare()
414 	tmp |= period_bytes - 1;  in snd_als300_playback_prepare()
415 	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL, tmp);  in snd_als300_playback_prepare()
418 	snd_als300_gcr_write(chip->port, PLAYBACK_START,  in snd_als300_playback_prepare()
419 					runtime->dma_addr);  in snd_als300_playback_prepare()
420 	snd_als300_gcr_write(chip->port, PLAYBACK_END,  in snd_als300_playback_prepare()
421 					runtime->dma_addr + buffer_bytes - 1);  in snd_als300_playback_prepare()
422 	spin_unlock_irq(&chip->reg_lock);  in snd_als300_playback_prepare()
429 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_capture_prepare()  local
430 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_als300_capture_prepare()
434 	spin_lock_irq(&chip->reg_lock);  in snd_als300_capture_prepare()
435 	tmp = snd_als300_gcr_read(chip->port, RECORD_CONTROL);  in snd_als300_capture_prepare()
443 	tmp |= period_bytes - 1;  in snd_als300_capture_prepare()
446 	snd_als300_gcr_write(chip->port, RECORD_CONTROL, tmp);  in snd_als300_capture_prepare()
447 	snd_als300_gcr_write(chip->port, RECORD_START,  in snd_als300_capture_prepare()
448 					runtime->dma_addr);  in snd_als300_capture_prepare()
449 	snd_als300_gcr_write(chip->port, RECORD_END,  in snd_als300_capture_prepare()
450 					runtime->dma_addr + buffer_bytes - 1);  in snd_als300_capture_prepare()
451 	spin_unlock_irq(&chip->reg_lock);  in snd_als300_capture_prepare()
457 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_trigger()  local
463 	data = substream->runtime->private_data;  in snd_als300_trigger()
464 	reg = data->control_register;  in snd_als300_trigger()
466 	spin_lock(&chip->reg_lock);  in snd_als300_trigger()
470 		tmp = snd_als300_gcr_read(chip->port, reg);  in snd_als300_trigger()
471 		data->period_flipflop = 1;  in snd_als300_trigger()
472 		snd_als300_gcr_write(chip->port, reg, tmp | TRANSFER_START);  in snd_als300_trigger()
477 		tmp = snd_als300_gcr_read(chip->port, reg);  in snd_als300_trigger()
478 		snd_als300_gcr_write(chip->port, reg, tmp & ~TRANSFER_START);  in snd_als300_trigger()
482 		tmp = snd_als300_gcr_read(chip->port, reg);  in snd_als300_trigger()
483 		snd_als300_gcr_write(chip->port, reg, tmp | FIFO_PAUSE);  in snd_als300_trigger()
487 		tmp = snd_als300_gcr_read(chip->port, reg);  in snd_als300_trigger()
488 		snd_als300_gcr_write(chip->port, reg, tmp & ~FIFO_PAUSE);  in snd_als300_trigger()
493 		ret = -EINVAL;  in snd_als300_trigger()
495 	spin_unlock(&chip->reg_lock);  in snd_als300_trigger()
502 	struct snd_als300 *chip = snd_pcm_substream_chip(substream);  in snd_als300_pointer()  local
506 	data = substream->runtime->private_data;  in snd_als300_pointer()
509 	spin_lock(&chip->reg_lock);  in snd_als300_pointer()
510 	current_ptr = (u16) snd_als300_gcr_read(chip->port,  in snd_als300_pointer()
511 					data->block_counter_register) + 4;  in snd_als300_pointer()
512 	spin_unlock(&chip->reg_lock);  in snd_als300_pointer()
516 		current_ptr = period_bytes - current_ptr;  in snd_als300_pointer()
518 	if (data->period_flipflop == 0)  in snd_als300_pointer()
521 	return bytes_to_frames(substream->runtime, current_ptr);  in snd_als300_pointer()
540 static int snd_als300_new_pcm(struct snd_als300 *chip)  in snd_als300_new_pcm()  argument
545 	err = snd_pcm_new(chip->card, "ALS300", 0, 1, 1, &pcm);  in snd_als300_new_pcm()
548 	pcm->private_data = chip;  in snd_als300_new_pcm()
549 	strcpy(pcm->name, "ALS300");  in snd_als300_new_pcm()
550 	chip->pcm = pcm;  in snd_als300_new_pcm()
558 	/* pre-allocation of buffers */  in snd_als300_new_pcm()
559 	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,  in snd_als300_new_pcm()
564 static void snd_als300_init(struct snd_als300 *chip)  in snd_als300_init()  argument
569 	spin_lock_irqsave(&chip->reg_lock, flags);  in snd_als300_init()
570 	chip->revision = (snd_als300_gcr_read(chip->port, MISC_CONTROL) >> 16)  in snd_als300_init()
573 	tmp = snd_als300_gcr_read(chip->port, DRAM_WRITE_CONTROL);  in snd_als300_init()
574 	snd_als300_gcr_write(chip->port, DRAM_WRITE_CONTROL,  in snd_als300_init()
579 	snd_als300_set_irq_flag(chip, IRQ_ENABLE);  in snd_als300_init()
583 	tmp = snd_als300_gcr_read(chip->port, MISC_CONTROL);  in snd_als300_init()
584 	snd_als300_gcr_write(chip->port, MISC_CONTROL,  in snd_als300_init()
588 	snd_als300_gcr_write(chip->port, MUS_VOC_VOL, 0);  in snd_als300_init()
591 	tmp = snd_als300_gcr_read(chip->port, PLAYBACK_CONTROL);  in snd_als300_init()
592 	snd_als300_gcr_write(chip->port, PLAYBACK_CONTROL,  in snd_als300_init()
594 	spin_unlock_irqrestore(&chip->reg_lock, flags);  in snd_als300_init()
600 	struct snd_als300 *chip = card->private_data;  in snd_als300_create()  local
608 	if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {  in snd_als300_create()
609 		dev_err(card->dev, "error setting 28bit DMA mask\n");  in snd_als300_create()
610 		return -ENXIO;  in snd_als300_create()
614 	chip->card = card;  in snd_als300_create()
615 	chip->pci = pci;  in snd_als300_create()
616 	chip->irq = -1;  in snd_als300_create()
617 	chip->chip_type = chip_type;  in snd_als300_create()
618 	spin_lock_init(&chip->reg_lock);  in snd_als300_create()
624 	chip->port = pci_resource_start(pci, 0);  in snd_als300_create()
626 	if (chip->chip_type == DEVICE_ALS300_PLUS)  in snd_als300_create()
631 	if (devm_request_irq(&pci->dev, pci->irq, irq_handler, IRQF_SHARED,  in snd_als300_create()
632 			     KBUILD_MODNAME, chip)) {  in snd_als300_create()
633 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);  in snd_als300_create()
634 		return -EBUSY;  in snd_als300_create()
636 	chip->irq = pci->irq;  in snd_als300_create()
637 	card->sync_irq = chip->irq;  in snd_als300_create()
638 	card->private_free = snd_als300_free;  in snd_als300_create()
640 	snd_als300_init(chip);  in snd_als300_create()
642 	err = snd_als300_ac97(chip);  in snd_als300_create()
644 		dev_err(card->dev, "Could not create ac97\n");  in snd_als300_create()
648 	err = snd_als300_new_pcm(chip);  in snd_als300_create()
650 		dev_err(card->dev, "Could not create PCM\n");  in snd_als300_create()
660 	struct snd_als300 *chip = card->private_data;  in snd_als300_suspend()  local
663 	snd_ac97_suspend(chip->ac97);  in snd_als300_suspend()
670 	struct snd_als300 *chip = card->private_data;  in snd_als300_resume()  local
672 	snd_als300_init(chip);  in snd_als300_resume()
673 	snd_ac97_resume(chip->ac97);  in snd_als300_resume()
686 	struct snd_als300 *chip;  in snd_als300_probe()  local
690 		return -ENODEV;  in snd_als300_probe()
693 		return -ENOENT;  in snd_als300_probe()
696 	err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,  in snd_als300_probe()
697 				sizeof(*chip), &card);  in snd_als300_probe()
700 	chip = card->private_data;  in snd_als300_probe()
702 	chip_type = pci_id->driver_data;  in snd_als300_probe()
708 	strcpy(card->driver, "ALS300");  in snd_als300_probe()
709 	if (chip->chip_type == DEVICE_ALS300_PLUS)  in snd_als300_probe()
712 		sprintf(card->shortname, "ALS300+ (Rev. %d)", chip->revision);  in snd_als300_probe()
714 		sprintf(card->shortname, "ALS300 (Rev. %c)", 'A' +  in snd_als300_probe()
715 							chip->revision - 1);  in snd_als300_probe()
716 	sprintf(card->longname, "%s at 0x%lx irq %i",  in snd_als300_probe()
717 				card->shortname, chip->port, chip->irq);  in snd_als300_probe()