2 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4 * Routines for IRQ control of EMU10K1 chips
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include <sound/driver.h>
29 #include <linux/time.h>
30 #include <sound/core.h>
31 #include <sound/emu10k1.h>
33 irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
35 emu10k1_t *emu = dev_id;
36 unsigned int status, orig_status;
39 while ((status = inl(emu->port + IPR)) != 0) {
40 // printk("irq - status = 0x%x\n", status);
43 if (status & IPR_PCIERROR) {
44 snd_printk("interrupt: PCI error\n");
45 snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE);
46 status &= ~IPR_PCIERROR;
48 if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) {
49 if (emu->hwvol_interrupt)
50 emu->hwvol_interrupt(emu, status);
52 snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE);
53 status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE);
55 if (status & IPR_CHANNELLOOP) {
57 int voice_max = status & IPR_CHANNELNUMBERMASK;
59 emu10k1_voice_t *pvoice = emu->voices;
61 val = snd_emu10k1_ptr_read(emu, CLIPL, 0);
62 for (voice = 0; voice <= voice_max; voice++) {
64 val = snd_emu10k1_ptr_read(emu, CLIPH, 0);
66 if (pvoice->use && pvoice->interrupt != NULL) {
67 pvoice->interrupt(emu, pvoice);
68 snd_emu10k1_voice_intr_ack(emu, voice);
70 snd_emu10k1_voice_intr_disable(emu, voice);
76 status &= ~IPR_CHANNELLOOP;
78 status &= ~IPR_CHANNELNUMBERMASK;
79 if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) {
80 if (emu->capture_interrupt)
81 emu->capture_interrupt(emu, status);
83 snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE);
84 status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL);
86 if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) {
87 if (emu->capture_mic_interrupt)
88 emu->capture_mic_interrupt(emu, status);
90 snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE);
91 status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL);
93 if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) {
94 if (emu->capture_efx_interrupt)
95 emu->capture_efx_interrupt(emu, status);
97 snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE);
98 status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL);
100 if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
101 if (emu->midi.interrupt)
102 emu->midi.interrupt(emu, status);
104 snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
105 status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY);
107 if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) {
108 if (emu->midi2.interrupt)
109 emu->midi2.interrupt(emu, status);
111 snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2);
112 status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2);
114 if (status & IPR_INTERVALTIMER) {
116 snd_timer_interrupt(emu->timer, emu->timer->sticks);
118 snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB);
119 status &= ~IPR_INTERVALTIMER;
121 if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) {
122 if (emu->spdif_interrupt)
123 emu->spdif_interrupt(emu, status);
125 snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE);
126 status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE);
128 if (status & IPR_FXDSP) {
129 if (emu->dsp_interrupt)
130 emu->dsp_interrupt(emu);
132 snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE);
133 status &= ~IPR_FXDSP;
137 snd_printk(KERN_ERR "emu10k1: unhandled interrupt: 0x%08x\n", status);
138 //make sure any interrupts we don't handle are disabled:
139 bits = INTE_FXDSPENABLE |
140 INTE_PCIERRORENABLE |
149 INTE_INTERVALTIMERENB |
153 bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2;
154 snd_emu10k1_intr_disable(emu, bits);
156 outl(orig_status, emu->port + IPR); /* ack all */
158 return IRQ_RETVAL(handled);