40 static void aaci_ac97_select_codec(struct aaci *aaci, struct snd_ac97 *ac97)  in aaci_ac97_select_codec()  argument
42 	u32 v, maincr = aaci->maincr | MAINCR_SCRA(ac97->num);  in aaci_ac97_select_codec()
47 	v = readl(aaci->base + AACI_SLFR);  in aaci_ac97_select_codec()
49 		readl(aaci->base + AACI_SL2RX);  in aaci_ac97_select_codec()
51 		readl(aaci->base + AACI_SL1RX);  in aaci_ac97_select_codec()
53 	if (maincr != readl(aaci->base + AACI_MAINCR)) {  in aaci_ac97_select_codec()
54 		writel(maincr, aaci->base + AACI_MAINCR);  in aaci_ac97_select_codec()
55 		readl(aaci->base + AACI_MAINCR);  in aaci_ac97_select_codec()
72 	struct aaci *aaci = ac97->private_data;  in aaci_ac97_write()  local
79 	mutex_lock(&aaci->ac97_sem);  in aaci_ac97_write()
81 	aaci_ac97_select_codec(aaci, ac97);  in aaci_ac97_write()
87 	writel(val << 4, aaci->base + AACI_SL2TX);  in aaci_ac97_write()
88 	writel(reg << 12, aaci->base + AACI_SL1TX);  in aaci_ac97_write()
97 		v = readl(aaci->base + AACI_SLFR);  in aaci_ac97_write()
101 		dev_err(&aaci->dev->dev,  in aaci_ac97_write()
104 	mutex_unlock(&aaci->ac97_sem);  in aaci_ac97_write()
112 	struct aaci *aaci = ac97->private_data;  in aaci_ac97_read()  local
119 	mutex_lock(&aaci->ac97_sem);  in aaci_ac97_read()
121 	aaci_ac97_select_codec(aaci, ac97);  in aaci_ac97_read()
126 	writel((reg << 12) | (1 << 19), aaci->base + AACI_SL1TX);  in aaci_ac97_read()
135 		v = readl(aaci->base + AACI_SLFR);  in aaci_ac97_read()
139 		dev_err(&aaci->dev->dev, "timeout on slot 1 TX busy\n");  in aaci_ac97_read()
152 		v = readl(aaci->base + AACI_SLFR) & (SLFR_1RXV|SLFR_2RXV);  in aaci_ac97_read()
156 		dev_err(&aaci->dev->dev, "timeout on RX valid\n");  in aaci_ac97_read()
162 		v = readl(aaci->base + AACI_SL1RX) >> 12;  in aaci_ac97_read()
164 			v = readl(aaci->base + AACI_SL2RX) >> 4;  in aaci_ac97_read()
167 			dev_warn(&aaci->dev->dev,  in aaci_ac97_read()
171 			dev_warn(&aaci->dev->dev,  in aaci_ac97_read()
178 	mutex_unlock(&aaci->ac97_sem);  in aaci_ac97_read()
199 static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)  in aaci_fifo_irq()  argument
202 		dev_warn(&aaci->dev->dev, "RX overrun on chan %d\n", channel);  in aaci_fifo_irq()
203 		writel(ICLR_RXOEC1 << channel, aaci->base + AACI_INTCLR);  in aaci_fifo_irq()
207 		dev_warn(&aaci->dev->dev, "RX timeout on chan %d\n", channel);  in aaci_fifo_irq()
208 		writel(ICLR_RXTOFEC1 << channel, aaci->base + AACI_INTCLR);  in aaci_fifo_irq()
212 		struct aaci_runtime *aacirun = &aaci->capture;  in aaci_fifo_irq()
217 			dev_warn(&aaci->dev->dev, "RX interrupt???\n");  in aaci_fifo_irq()
267 		dev_dbg(&aaci->dev->dev, "TX underrun on chan %d\n", channel);  in aaci_fifo_irq()
268 		writel(ICLR_TXUEC1 << channel, aaci->base + AACI_INTCLR);  in aaci_fifo_irq()
272 		struct aaci_runtime *aacirun = &aaci->playback;  in aaci_fifo_irq()
277 			dev_warn(&aaci->dev->dev, "TX interrupt???\n");  in aaci_fifo_irq()
329 	struct aaci *aaci = devid;  in aaci_irq()  local
333 	mask = readl(aaci->base + AACI_ALLINTS);  in aaci_irq()
338 				aaci_fifo_irq(aaci, i, m);  in aaci_irq()
387 	struct aaci *aaci = rule->private;  in aaci_rule_channels()  local
391 	slots = aaci->ac97_bus->pcms[0].r[0].slots;  in aaci_rule_channels()
405 	struct aaci *aaci = substream->private_data;  in aaci_pcm_open()  local
410 		aacirun = &aaci->playback;  in aaci_pcm_open()
412 		aacirun = &aaci->capture;  in aaci_pcm_open()
427 					  aaci_rule_channels, aaci,  in aaci_pcm_open()
441 	runtime->hw.fifo_size = aaci->fifo_depth * 2;  in aaci_pcm_open()
443 	mutex_lock(&aaci->irq_lock);  in aaci_pcm_open()
444 	if (!aaci->users++) {  in aaci_pcm_open()
445 		ret = request_irq(aaci->dev->irq[0], aaci_irq,  in aaci_pcm_open()
446 			   IRQF_SHARED, DRIVER_NAME, aaci);  in aaci_pcm_open()
448 			aaci->users--;  in aaci_pcm_open()
450 	mutex_unlock(&aaci->irq_lock);  in aaci_pcm_open()
461 	struct aaci *aaci = substream->private_data;  in aaci_pcm_close()  local
468 	mutex_lock(&aaci->irq_lock);  in aaci_pcm_close()
469 	if (!--aaci->users)  in aaci_pcm_close()
470 		free_irq(aaci->dev->irq[0], aaci);  in aaci_pcm_close()
471 	mutex_unlock(&aaci->irq_lock);  in aaci_pcm_close()
526 		struct aaci *aaci = substream->private_data;  in aaci_pcm_hw_params()  local
540 		aacirun->fifo_bytes = aaci->fifo_depth * 4 / 2;  in aaci_pcm_hw_params()
726 	struct aaci *aaci = substream->private_data;  in aaci_pcm_capture_prepare()  local
731 	aaci_ac97_write(aaci->ac97, AC97_EXTENDED_STATUS, 0x0001); /* VRA */  in aaci_pcm_capture_prepare()
732 	aaci_ac97_write(aaci->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate);  in aaci_pcm_capture_prepare()
733 	aaci_ac97_write(aaci->ac97, AC97_PCM_MIC_ADC_RATE, runtime->rate);  in aaci_pcm_capture_prepare()
736 	aaci_ac97_write(aaci->ac97, AC97_REC_SEL, 0x0404);  in aaci_pcm_capture_prepare()
758 	struct aaci *aaci = card->private_data;  in aaci_do_suspend()  local
760 	snd_pcm_suspend_all(aaci->pcm);  in aaci_do_suspend()
835 static int aaci_probe_ac97(struct aaci *aaci)  in aaci_probe_ac97()  argument
845 	writel(0, aaci->base + AACI_RESET);  in aaci_probe_ac97()
847 	writel(RESET_NRST, aaci->base + AACI_RESET);  in aaci_probe_ac97()
855 	ret = snd_ac97_bus(aaci->card, 0, &aaci_bus_ops, aaci, &ac97_bus);  in aaci_probe_ac97()
860 	aaci->ac97_bus = ac97_bus;  in aaci_probe_ac97()
863 	ac97_template.private_data = aaci;  in aaci_probe_ac97()
870 	aaci->ac97 = ac97;  in aaci_probe_ac97()
882 	aaci->playback.pcm = &ac97_bus->pcms[0];  in aaci_probe_ac97()
883 	aaci->capture.pcm  = &ac97_bus->pcms[1];  in aaci_probe_ac97()
891 	struct aaci *aaci = card->private_data;  in aaci_free_card()  local
893 	iounmap(aaci->base);  in aaci_free_card()
896 static struct aaci *aaci_init_card(struct amba_device *dev)  in aaci_init_card()
898 	struct aaci *aaci;  in aaci_init_card()  local
903 			   THIS_MODULE, sizeof(struct aaci), &card);  in aaci_init_card()
916 	aaci = card->private_data;  in aaci_init_card()
917 	mutex_init(&aaci->ac97_sem);  in aaci_init_card()
918 	mutex_init(&aaci->irq_lock);  in aaci_init_card()
919 	aaci->card = card;  in aaci_init_card()
920 	aaci->dev = dev;  in aaci_init_card()
923 	aaci->maincr = MAINCR_IE | MAINCR_SL1RXEN | MAINCR_SL1TXEN |  in aaci_init_card()
926 	return aaci;  in aaci_init_card()
929 static int aaci_init_pcm(struct aaci *aaci)  in aaci_init_pcm()  argument
934 	ret = snd_pcm_new(aaci->card, "AACI AC'97", 0, 1, 1, &pcm);  in aaci_init_pcm()
936 		aaci->pcm = pcm;  in aaci_init_pcm()
937 		pcm->private_data = aaci;  in aaci_init_pcm()
951 static unsigned int aaci_size_fifo(struct aaci *aaci)  in aaci_size_fifo()  argument
953 	struct aaci_runtime *aacirun = &aaci->playback;  in aaci_size_fifo()
972 	writel(aaci->maincr & ~MAINCR_IE, aaci->base + AACI_MAINCR);  in aaci_size_fifo()
973 	readl(aaci->base + AACI_MAINCR);  in aaci_size_fifo()
975 	writel(aaci->maincr, aaci->base + AACI_MAINCR);  in aaci_size_fifo()
990 	struct aaci *aaci;  in aaci_probe()  local
997 	aaci = aaci_init_card(dev);  in aaci_probe()
998 	if (!aaci) {  in aaci_probe()
1003 	aaci->base = ioremap(dev->res.start, resource_size(&dev->res));  in aaci_probe()
1004 	if (!aaci->base) {  in aaci_probe()
1012 	spin_lock_init(&aaci->playback.lock);  in aaci_probe()
1013 	aaci->playback.base = aaci->base + AACI_CSCH1;  in aaci_probe()
1014 	aaci->playback.fifo = aaci->base + AACI_DR1;  in aaci_probe()
1019 	spin_lock_init(&aaci->capture.lock);  in aaci_probe()
1020 	aaci->capture.base = aaci->base + AACI_CSCH1;  in aaci_probe()
1021 	aaci->capture.fifo = aaci->base + AACI_DR1;  in aaci_probe()
1024 		void __iomem *base = aaci->base + i * 0x14;  in aaci_probe()
1031 	writel(0x1fff, aaci->base + AACI_INTCLR);  in aaci_probe()
1032 	writel(aaci->maincr, aaci->base + AACI_MAINCR);  in aaci_probe()
1037 	readl(aaci->base + AACI_CSCH1);  in aaci_probe()
1038 	ret = aaci_probe_ac97(aaci);  in aaci_probe()
1046 	aaci->fifo_depth = aaci_size_fifo(aaci);  in aaci_probe()
1047 	if (aaci->fifo_depth & 15) {  in aaci_probe()
1049 		       aaci->fifo_depth);  in aaci_probe()
1054 	ret = aaci_init_pcm(aaci);  in aaci_probe()
1058 	ret = snd_card_register(aaci->card);  in aaci_probe()
1060 		dev_info(&dev->dev, "%s\n", aaci->card->longname);  in aaci_probe()
1061 		dev_info(&dev->dev, "FIFO %u entries\n", aaci->fifo_depth);  in aaci_probe()
1062 		amba_set_drvdata(dev, aaci->card);  in aaci_probe()
1067 	if (aaci)  in aaci_probe()
1068 		snd_card_free(aaci->card);  in aaci_probe()
1078 		struct aaci *aaci = card->private_data;  in aaci_remove()  local
1079 		writel(0, aaci->base + AACI_MAINCR);  in aaci_remove()