11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
21da177e4SLinus Torvalds /*
3c1017a4cSJaroslav Kysela * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
41da177e4SLinus Torvalds * Creative Labs, Inc.
51da177e4SLinus Torvalds * Routines for IRQ control of EMU10K1 chips
61da177e4SLinus Torvalds */
71da177e4SLinus Torvalds
81da177e4SLinus Torvalds #include <linux/time.h>
91da177e4SLinus Torvalds #include <sound/core.h>
101da177e4SLinus Torvalds #include <sound/emu10k1.h>
111da177e4SLinus Torvalds
snd_emu10k1_interrupt(int irq,void * dev_id)127d12e780SDavid Howells irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id)
131da177e4SLinus Torvalds {
14eb4698f3STakashi Iwai struct snd_emu10k1 *emu = dev_id;
1502a0d9c2SOswald Buddenhagen unsigned int status, orig_status;
161da177e4SLinus Torvalds int handled = 0;
17c94fa4c9SJames Courtier-Dutton int timeout = 0;
181da177e4SLinus Torvalds
199436f015SOswald Buddenhagen while ((status = inl(emu->port + IPR)) != 0) {
201da177e4SLinus Torvalds handled = 1;
21fb6a0d63SJames Courtier-Dutton if ((status & 0xffffffff) == 0xffffffff) {
226f002b02STakashi Iwai dev_info(emu->card->dev,
236f002b02STakashi Iwai "Suspected sound card removal\n");
24fb6a0d63SJames Courtier-Dutton break;
25fb6a0d63SJames Courtier-Dutton }
269436f015SOswald Buddenhagen if (++timeout == 1000) {
279436f015SOswald Buddenhagen dev_info(emu->card->dev, "emu10k1 irq routine failure\n");
289436f015SOswald Buddenhagen break;
299436f015SOswald Buddenhagen }
309436f015SOswald Buddenhagen orig_status = status;
311da177e4SLinus Torvalds if (status & IPR_PCIERROR) {
326f002b02STakashi Iwai dev_err(emu->card->dev, "interrupt: PCI error\n");
331da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE);
341da177e4SLinus Torvalds status &= ~IPR_PCIERROR;
351da177e4SLinus Torvalds }
361da177e4SLinus Torvalds if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) {
371da177e4SLinus Torvalds if (emu->hwvol_interrupt)
381da177e4SLinus Torvalds emu->hwvol_interrupt(emu, status);
391da177e4SLinus Torvalds else
401da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE);
411da177e4SLinus Torvalds status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE);
421da177e4SLinus Torvalds }
431da177e4SLinus Torvalds if (status & IPR_CHANNELLOOP) {
446797400eSOswald Buddenhagen struct snd_emu10k1_voice *pvoice;
451da177e4SLinus Torvalds int voice;
461da177e4SLinus Torvalds int voice_max = status & IPR_CHANNELNUMBERMASK;
471da177e4SLinus Torvalds u32 val;
481da177e4SLinus Torvalds
491da177e4SLinus Torvalds val = snd_emu10k1_ptr_read(emu, CLIPL, 0);
506797400eSOswald Buddenhagen pvoice = emu->voices;
511da177e4SLinus Torvalds for (voice = 0; voice <= voice_max; voice++) {
521da177e4SLinus Torvalds if (voice == 0x20)
531da177e4SLinus Torvalds val = snd_emu10k1_ptr_read(emu, CLIPH, 0);
541da177e4SLinus Torvalds if (val & 1) {
551da177e4SLinus Torvalds if (pvoice->use && pvoice->interrupt != NULL) {
561da177e4SLinus Torvalds pvoice->interrupt(emu, pvoice);
571da177e4SLinus Torvalds snd_emu10k1_voice_intr_ack(emu, voice);
581da177e4SLinus Torvalds } else {
591da177e4SLinus Torvalds snd_emu10k1_voice_intr_disable(emu, voice);
601da177e4SLinus Torvalds }
611da177e4SLinus Torvalds }
621da177e4SLinus Torvalds val >>= 1;
631da177e4SLinus Torvalds pvoice++;
641da177e4SLinus Torvalds }
651da177e4SLinus Torvalds val = snd_emu10k1_ptr_read(emu, HLIPL, 0);
666797400eSOswald Buddenhagen pvoice = emu->voices;
671da177e4SLinus Torvalds for (voice = 0; voice <= voice_max; voice++) {
681da177e4SLinus Torvalds if (voice == 0x20)
691da177e4SLinus Torvalds val = snd_emu10k1_ptr_read(emu, HLIPH, 0);
701da177e4SLinus Torvalds if (val & 1) {
711da177e4SLinus Torvalds if (pvoice->use && pvoice->interrupt != NULL) {
721da177e4SLinus Torvalds pvoice->interrupt(emu, pvoice);
731da177e4SLinus Torvalds snd_emu10k1_voice_half_loop_intr_ack(emu, voice);
741da177e4SLinus Torvalds } else {
751da177e4SLinus Torvalds snd_emu10k1_voice_half_loop_intr_disable(emu, voice);
761da177e4SLinus Torvalds }
771da177e4SLinus Torvalds }
781da177e4SLinus Torvalds val >>= 1;
791da177e4SLinus Torvalds pvoice++;
801da177e4SLinus Torvalds }
81583307baSOswald Buddenhagen status &= ~(IPR_CHANNELLOOP | IPR_CHANNELNUMBERMASK);
821da177e4SLinus Torvalds }
831da177e4SLinus Torvalds if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) {
841da177e4SLinus Torvalds if (emu->capture_interrupt)
851da177e4SLinus Torvalds emu->capture_interrupt(emu, status);
861da177e4SLinus Torvalds else
871da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE);
881da177e4SLinus Torvalds status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL);
891da177e4SLinus Torvalds }
901da177e4SLinus Torvalds if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) {
911da177e4SLinus Torvalds if (emu->capture_mic_interrupt)
921da177e4SLinus Torvalds emu->capture_mic_interrupt(emu, status);
931da177e4SLinus Torvalds else
941da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE);
951da177e4SLinus Torvalds status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL);
961da177e4SLinus Torvalds }
971da177e4SLinus Torvalds if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) {
981da177e4SLinus Torvalds if (emu->capture_efx_interrupt)
991da177e4SLinus Torvalds emu->capture_efx_interrupt(emu, status);
1001da177e4SLinus Torvalds else
1011da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE);
1021da177e4SLinus Torvalds status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL);
1031da177e4SLinus Torvalds }
1041da177e4SLinus Torvalds if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
1051da177e4SLinus Torvalds if (emu->midi.interrupt)
1061da177e4SLinus Torvalds emu->midi.interrupt(emu, status);
1071da177e4SLinus Torvalds else
1081da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
1091da177e4SLinus Torvalds status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY);
1101da177e4SLinus Torvalds }
1111da177e4SLinus Torvalds if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) {
1121da177e4SLinus Torvalds if (emu->midi2.interrupt)
1131da177e4SLinus Torvalds emu->midi2.interrupt(emu, status);
1141da177e4SLinus Torvalds else
1151da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2);
1161da177e4SLinus Torvalds status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2);
1171da177e4SLinus Torvalds }
1181da177e4SLinus Torvalds if (status & IPR_INTERVALTIMER) {
1191da177e4SLinus Torvalds if (emu->timer)
1201da177e4SLinus Torvalds snd_timer_interrupt(emu->timer, emu->timer->sticks);
1211da177e4SLinus Torvalds else
1221da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB);
1231da177e4SLinus Torvalds status &= ~IPR_INTERVALTIMER;
1241da177e4SLinus Torvalds }
1251da177e4SLinus Torvalds if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) {
1261da177e4SLinus Torvalds if (emu->spdif_interrupt)
1271da177e4SLinus Torvalds emu->spdif_interrupt(emu, status);
1281da177e4SLinus Torvalds else
1291da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE);
1301da177e4SLinus Torvalds status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE);
1311da177e4SLinus Torvalds }
1321da177e4SLinus Torvalds if (status & IPR_FXDSP) {
1331da177e4SLinus Torvalds if (emu->dsp_interrupt)
1341da177e4SLinus Torvalds emu->dsp_interrupt(emu);
1351da177e4SLinus Torvalds else
1361da177e4SLinus Torvalds snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE);
1371da177e4SLinus Torvalds status &= ~IPR_FXDSP;
1381da177e4SLinus Torvalds }
1396e4abc40SJames Courtier-Dutton if (status & IPR_P16V) {
14002a0d9c2SOswald Buddenhagen if (emu->p16v_interrupt)
14102a0d9c2SOswald Buddenhagen emu->p16v_interrupt(emu);
14202a0d9c2SOswald Buddenhagen else
14302a0d9c2SOswald Buddenhagen outl(0, emu->port + INTE2);
1446e4abc40SJames Courtier-Dutton status &= ~IPR_P16V;
1456e4abc40SJames Courtier-Dutton }
146*fbb64eedSOswald Buddenhagen if (status & IPR_A_GPIO) {
147*fbb64eedSOswald Buddenhagen if (emu->gpio_interrupt)
148*fbb64eedSOswald Buddenhagen emu->gpio_interrupt(emu);
149*fbb64eedSOswald Buddenhagen else
150*fbb64eedSOswald Buddenhagen snd_emu10k1_intr_disable(emu, INTE_A_GPIOENABLE);
151*fbb64eedSOswald Buddenhagen status &= ~IPR_A_GPIO;
152*fbb64eedSOswald Buddenhagen }
1536e4abc40SJames Courtier-Dutton
1541da177e4SLinus Torvalds if (status) {
1556f002b02STakashi Iwai dev_err(emu->card->dev,
1566f002b02STakashi Iwai "unhandled interrupt: 0x%08x\n", status);
1571da177e4SLinus Torvalds }
1581da177e4SLinus Torvalds outl(orig_status, emu->port + IPR); /* ack all */
1591da177e4SLinus Torvalds }
160c94fa4c9SJames Courtier-Dutton
1611da177e4SLinus Torvalds return IRQ_RETVAL(handled);
1621da177e4SLinus Torvalds }
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