18  * Thanks to the AMD engineer who was able to get us the AMD79C30
345 /* Idle the AMD7930 chip.  The amd->lock is not held.  */
346 static __inline__ void amd7930_idle(struct snd_amd7930 *amd)  in amd7930_idle()  argument
350 	spin_lock_irqsave(&amd->lock, flags);  in amd7930_idle()
351 	sbus_writeb(AMR_INIT, amd->regs + AMD7930_CR);  in amd7930_idle()
352 	sbus_writeb(0, amd->regs + AMD7930_DR);  in amd7930_idle()
353 	spin_unlock_irqrestore(&amd->lock, flags);  in amd7930_idle()
356 /* Enable chip interrupts.  The amd->lock is not held.  */
357 static __inline__ void amd7930_enable_ints(struct snd_amd7930 *amd)  in amd7930_enable_ints()  argument
361 	spin_lock_irqsave(&amd->lock, flags);  in amd7930_enable_ints()
362 	sbus_writeb(AMR_INIT, amd->regs + AMD7930_CR);  in amd7930_enable_ints()
363 	sbus_writeb(AM_INIT_ACTIVE, amd->regs + AMD7930_DR);  in amd7930_enable_ints()
364 	spin_unlock_irqrestore(&amd->lock, flags);  in amd7930_enable_ints()
367 /* Disable chip interrupts.  The amd->lock is not held.  */
368 static __inline__ void amd7930_disable_ints(struct snd_amd7930 *amd)  in amd7930_disable_ints()  argument
372 	spin_lock_irqsave(&amd->lock, flags);  in amd7930_disable_ints()
373 	sbus_writeb(AMR_INIT, amd->regs + AMD7930_CR);  in amd7930_disable_ints()
374 	sbus_writeb(AM_INIT_ACTIVE | AM_INIT_DISABLE_INTS, amd->regs + AMD7930_DR);  in amd7930_disable_ints()
375 	spin_unlock_irqrestore(&amd->lock, flags);  in amd7930_disable_ints()
379  * The amd->lock is held and local interrupts are disabled.
381 static void __amd7930_write_map(struct snd_amd7930 *amd)  in __amd7930_write_map()  argument
383 	struct amd7930_map *map = &amd->map;  in __amd7930_write_map()
385 	sbus_writeb(AMR_MAP_GX, amd->regs + AMD7930_CR);  in __amd7930_write_map()
386 	sbus_writeb(((map->gx >> 0) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
387 	sbus_writeb(((map->gx >> 8) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
389 	sbus_writeb(AMR_MAP_GR, amd->regs + AMD7930_CR);  in __amd7930_write_map()
390 	sbus_writeb(((map->gr >> 0) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
391 	sbus_writeb(((map->gr >> 8) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
393 	sbus_writeb(AMR_MAP_STGR, amd->regs + AMD7930_CR);  in __amd7930_write_map()
394 	sbus_writeb(((map->stgr >> 0) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
395 	sbus_writeb(((map->stgr >> 8) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
397 	sbus_writeb(AMR_MAP_GER, amd->regs + AMD7930_CR);  in __amd7930_write_map()
398 	sbus_writeb(((map->ger >> 0) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
399 	sbus_writeb(((map->ger >> 8) & 0xff), amd->regs + AMD7930_DR);  in __amd7930_write_map()
401 	sbus_writeb(AMR_MAP_MMR1, amd->regs + AMD7930_CR);  in __amd7930_write_map()
402 	sbus_writeb(map->mmr1, amd->regs + AMD7930_DR);  in __amd7930_write_map()
404 	sbus_writeb(AMR_MAP_MMR2, amd->regs + AMD7930_CR);  in __amd7930_write_map()
405 	sbus_writeb(map->mmr2, amd->regs + AMD7930_DR);  in __amd7930_write_map()
473  * The amd->lock is held and local interrupts are disabled.
475 static void __amd7930_update_map(struct snd_amd7930 *amd)  in __amd7930_update_map()  argument
477 	struct amd7930_map *map = &amd->map;  in __amd7930_update_map()
480 	map->gx = gx_coeff[amd->rgain];  in __amd7930_update_map()
481 	map->stgr = gx_coeff[amd->mgain];  in __amd7930_update_map()
482 	level = (amd->pgain * (256 + ARRAY_SIZE(ger_coeff))) >> 8;  in __amd7930_update_map()
490 	__amd7930_write_map(amd);  in __amd7930_update_map()
495 	struct snd_amd7930 *amd = dev_id;  in snd_amd7930_interrupt()  local
499 	spin_lock(&amd->lock);  in snd_amd7930_interrupt()
503 	ir = sbus_readb(amd->regs + AMD7930_IR);  in snd_amd7930_interrupt()
507 		if (amd->flags & AMD7930_FLAG_PLAYBACK) {  in snd_amd7930_interrupt()
508 			if (amd->p_left > 0) {  in snd_amd7930_interrupt()
509 				byte = *(amd->p_cur++);  in snd_amd7930_interrupt()
510 				amd->p_left--;  in snd_amd7930_interrupt()
511 				sbus_writeb(byte, amd->regs + AMD7930_BBTB);  in snd_amd7930_interrupt()
512 				if (amd->p_left == 0)  in snd_amd7930_interrupt()
515 				sbus_writeb(0, amd->regs + AMD7930_BBTB);  in snd_amd7930_interrupt()
516 		} else if (amd->flags & AMD7930_FLAG_CAPTURE) {  in snd_amd7930_interrupt()
517 			byte = sbus_readb(amd->regs + AMD7930_BBRB);  in snd_amd7930_interrupt()
518 			if (amd->c_left > 0) {  in snd_amd7930_interrupt()
519 				*(amd->c_cur++) = byte;  in snd_amd7930_interrupt()
520 				amd->c_left--;  in snd_amd7930_interrupt()
521 				if (amd->c_left == 0)  in snd_amd7930_interrupt()
526 	spin_unlock(&amd->lock);  in snd_amd7930_interrupt()
529 		snd_pcm_period_elapsed(amd->playback_substream);  in snd_amd7930_interrupt()
531 		snd_pcm_period_elapsed(amd->capture_substream);  in snd_amd7930_interrupt()
536 static int snd_amd7930_trigger(struct snd_amd7930 *amd, unsigned int flag, int cmd)  in snd_amd7930_trigger()  argument
541 	spin_lock_irqsave(&amd->lock, flags);  in snd_amd7930_trigger()
543 		if (!(amd->flags & flag)) {  in snd_amd7930_trigger()
544 			amd->flags |= flag;  in snd_amd7930_trigger()
547 			sbus_writeb(AMR_MUX_MCR4, amd->regs + AMD7930_CR);  in snd_amd7930_trigger()
548 			sbus_writeb(AM_MUX_MCR4_ENABLE_INTS, amd->regs + AMD7930_DR);  in snd_amd7930_trigger()
551 		if (amd->flags & flag) {  in snd_amd7930_trigger()
552 			amd->flags &= ~flag;  in snd_amd7930_trigger()
555 			sbus_writeb(AMR_MUX_MCR4, amd->regs + AMD7930_CR);  in snd_amd7930_trigger()
556 			sbus_writeb(0, amd->regs + AMD7930_DR);  in snd_amd7930_trigger()
561 	spin_unlock_irqrestore(&amd->lock, flags);  in snd_amd7930_trigger()
569 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_playback_trigger()  local
570 	return snd_amd7930_trigger(amd, AMD7930_FLAG_PLAYBACK, cmd);  in snd_amd7930_playback_trigger()
576 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_capture_trigger()  local
577 	return snd_amd7930_trigger(amd, AMD7930_FLAG_CAPTURE, cmd);  in snd_amd7930_capture_trigger()
582 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_playback_prepare()  local
588 	spin_lock_irqsave(&amd->lock, flags);  in snd_amd7930_playback_prepare()
590 	amd->flags |= AMD7930_FLAG_PLAYBACK;  in snd_amd7930_playback_prepare()
593 	amd->p_orig = amd->p_cur = runtime->dma_area;  in snd_amd7930_playback_prepare()
594 	amd->p_left = size;  in snd_amd7930_playback_prepare()
597 	new_mmr1 = amd->map.mmr1;  in snd_amd7930_playback_prepare()
602 	if (new_mmr1 != amd->map.mmr1) {  in snd_amd7930_playback_prepare()
603 		amd->map.mmr1 = new_mmr1;  in snd_amd7930_playback_prepare()
604 		__amd7930_update_map(amd);  in snd_amd7930_playback_prepare()
607 	spin_unlock_irqrestore(&amd->lock, flags);  in snd_amd7930_playback_prepare()
614 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_capture_prepare()  local
620 	spin_lock_irqsave(&amd->lock, flags);  in snd_amd7930_capture_prepare()
622 	amd->flags |= AMD7930_FLAG_CAPTURE;  in snd_amd7930_capture_prepare()
625 	amd->c_orig = amd->c_cur = runtime->dma_area;  in snd_amd7930_capture_prepare()
626 	amd->c_left = size;  in snd_amd7930_capture_prepare()
629 	new_mmr1 = amd->map.mmr1;  in snd_amd7930_capture_prepare()
634 	if (new_mmr1 != amd->map.mmr1) {  in snd_amd7930_capture_prepare()
635 		amd->map.mmr1 = new_mmr1;  in snd_amd7930_capture_prepare()
636 		__amd7930_update_map(amd);  in snd_amd7930_capture_prepare()
639 	spin_unlock_irqrestore(&amd->lock, flags);  in snd_amd7930_capture_prepare()
646 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_playback_pointer()  local
649 	if (!(amd->flags & AMD7930_FLAG_PLAYBACK))  in snd_amd7930_playback_pointer()
651 	ptr = amd->p_cur - amd->p_orig;  in snd_amd7930_playback_pointer()
657 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_capture_pointer()  local
660 	if (!(amd->flags & AMD7930_FLAG_CAPTURE))  in snd_amd7930_capture_pointer()
663 	ptr = amd->c_cur - amd->c_orig;  in snd_amd7930_capture_pointer()
690 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_playback_open()  local
693 	amd->playback_substream = substream;  in snd_amd7930_playback_open()
700 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_capture_open()  local
703 	amd->capture_substream = substream;  in snd_amd7930_capture_open()
710 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_playback_close()  local
712 	amd->playback_substream = NULL;  in snd_amd7930_playback_close()
718 	struct snd_amd7930 *amd = snd_pcm_substream_chip(substream);  in snd_amd7930_capture_close()  local
720 	amd->capture_substream = NULL;  in snd_amd7930_capture_close()
740 static int snd_amd7930_pcm(struct snd_amd7930 *amd)  in snd_amd7930_pcm()  argument
745 	if ((err = snd_pcm_new(amd->card,  in snd_amd7930_pcm()
755 	pcm->private_data = amd;  in snd_amd7930_pcm()
757 	strcpy(pcm->name, amd->card->shortname);  in snd_amd7930_pcm()
758 	amd->pcm = pcm;  in snd_amd7930_pcm()
782 	struct snd_amd7930 *amd = snd_kcontrol_chip(kctl);  in snd_amd7930_get_volume()  local
788 		swval = &amd->mgain;  in snd_amd7930_get_volume()
791 		swval = &amd->rgain;  in snd_amd7930_get_volume()
795 		swval = &amd->pgain;  in snd_amd7930_get_volume()
806 	struct snd_amd7930 *amd = snd_kcontrol_chip(kctl);  in snd_amd7930_put_volume()  local
813 		swval = &amd->mgain;  in snd_amd7930_put_volume()
816 		swval = &amd->rgain;  in snd_amd7930_put_volume()
820 		swval = &amd->pgain;  in snd_amd7930_put_volume()
824 	spin_lock_irqsave(&amd->lock, flags);  in snd_amd7930_put_volume()
828 		__amd7930_update_map(amd);  in snd_amd7930_put_volume()
833 	spin_unlock_irqrestore(&amd->lock, flags);  in snd_amd7930_put_volume()
868 static int snd_amd7930_mixer(struct snd_amd7930 *amd)  in snd_amd7930_mixer()  argument
873 	if (snd_BUG_ON(!amd || !amd->card))  in snd_amd7930_mixer()
876 	card = amd->card;  in snd_amd7930_mixer()
881 				       snd_ctl_new1(&amd7930_controls[idx], amd))) < 0)  in snd_amd7930_mixer()
888 static int snd_amd7930_free(struct snd_amd7930 *amd)  in snd_amd7930_free()  argument
890 	struct platform_device *op = amd->op;  in snd_amd7930_free()
892 	amd7930_idle(amd);  in snd_amd7930_free()
894 	if (amd->irq)  in snd_amd7930_free()
895 		free_irq(amd->irq, amd);  in snd_amd7930_free()
897 	if (amd->regs)  in snd_amd7930_free()
898 		of_iounmap(&op->resource[0], amd->regs,  in snd_amd7930_free()
901 	kfree(amd);  in snd_amd7930_free()
908 	struct snd_amd7930 *amd = device->device_data;  in snd_amd7930_dev_free()  local
910 	return snd_amd7930_free(amd);  in snd_amd7930_dev_free()
922 	struct snd_amd7930 *amd;  in snd_amd7930_create()  local
927 	amd = kzalloc(sizeof(*amd), GFP_KERNEL);  in snd_amd7930_create()
928 	if (amd == NULL)  in snd_amd7930_create()
931 	spin_lock_init(&amd->lock);  in snd_amd7930_create()
932 	amd->card = card;  in snd_amd7930_create()
933 	amd->op = op;  in snd_amd7930_create()
935 	amd->regs = of_ioremap(&op->resource[0], 0,  in snd_amd7930_create()
937 	if (!amd->regs) {  in snd_amd7930_create()
940 		kfree(amd);  in snd_amd7930_create()
944 	amd7930_idle(amd);  in snd_amd7930_create()
947 			IRQF_SHARED, "amd7930", amd)) {  in snd_amd7930_create()
950 		snd_amd7930_free(amd);  in snd_amd7930_create()
953 	amd->irq = irq;  in snd_amd7930_create()
955 	amd7930_enable_ints(amd);  in snd_amd7930_create()
957 	spin_lock_irqsave(&amd->lock, flags);  in snd_amd7930_create()
959 	amd->rgain = 128;  in snd_amd7930_create()
960 	amd->pgain = 200;  in snd_amd7930_create()
961 	amd->mgain = 0;  in snd_amd7930_create()
963 	memset(&amd->map, 0, sizeof(amd->map));  in snd_amd7930_create()
964 	amd->map.mmr1 = (AM_MAP_MMR1_GX | AM_MAP_MMR1_GER |  in snd_amd7930_create()
966 	amd->map.mmr2 = (AM_MAP_MMR2_LS | AM_MAP_MMR2_AINB);  in snd_amd7930_create()
968 	__amd7930_update_map(amd);  in snd_amd7930_create()
971 	sbus_writeb(AMR_MUX_MCR1, amd->regs + AMD7930_CR);  in snd_amd7930_create()
973 		    amd->regs + AMD7930_DR);  in snd_amd7930_create()
975 	spin_unlock_irqrestore(&amd->lock, flags);  in snd_amd7930_create()
978 			     amd, &snd_amd7930_dev_ops);  in snd_amd7930_create()
980 		snd_amd7930_free(amd);  in snd_amd7930_create()
984 	*ramd = amd;  in snd_amd7930_create()
993 	struct snd_amd7930 *amd;  in amd7930_sbus_probe()  local
1019 				      irq, dev_num, &amd)) < 0)  in amd7930_sbus_probe()
1022 	err = snd_amd7930_pcm(amd);  in amd7930_sbus_probe()
1026 	err = snd_amd7930_mixer(amd);  in amd7930_sbus_probe()
1034 	amd->next = amd7930_list;  in amd7930_sbus_probe()
1035 	amd7930_list = amd;  in amd7930_sbus_probe()