1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Creative Labs, Inc.
* Routines for IRQ control of EMU10K1 chips
*/
#include <linux/time.h>
#include <sound/core.h>
#include <sound/emu10k1.h>
irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id)
{
struct snd_emu10k1 *emu = dev_id;
unsigned int status, orig_status;
int handled = 0;
int timeout = 0;
while ((status = inl(emu->port + IPR)) != 0) {
handled = 1;
if ((status & 0xffffffff) == 0xffffffff) {
dev_info(emu->card->dev,
"Suspected sound card removal\n");
break;
}
if (++timeout == 1000) {
dev_info(emu->card->dev, "emu10k1 irq routine failure\n");
break;
}
orig_status = status;
if (status & IPR_PCIERROR) {
dev_err(emu->card->dev, "interrupt: PCI error\n");
snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE);
status &= ~IPR_PCIERROR;
}
if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) {
if (emu->hwvol_interrupt)
emu->hwvol_interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE);
status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE);
}
if (status & IPR_CHANNELLOOP) {
struct snd_emu10k1_voice *pvoice;
int voice;
int voice_max = status & IPR_CHANNELNUMBERMASK;
u32 val;
val = snd_emu10k1_ptr_read(emu, CLIPL, 0);
pvoice = emu->voices;
for (voice = 0; voice <= voice_max; voice++) {
if (voice == 0x20)
val = snd_emu10k1_ptr_read(emu, CLIPH, 0);
if (val & 1) {
if (pvoice->use && pvoice->interrupt != NULL) {
pvoice->interrupt(emu, pvoice);
snd_emu10k1_voice_intr_ack(emu, voice);
} else {
snd_emu10k1_voice_intr_disable(emu, voice);
}
}
val >>= 1;
pvoice++;
}
val = snd_emu10k1_ptr_read(emu, HLIPL, 0);
pvoice = emu->voices;
for (voice = 0; voice <= voice_max; voice++) {
if (voice == 0x20)
val = snd_emu10k1_ptr_read(emu, HLIPH, 0);
if (val & 1) {
if (pvoice->use && pvoice->interrupt != NULL) {
pvoice->interrupt(emu, pvoice);
snd_emu10k1_voice_half_loop_intr_ack(emu, voice);
} else {
snd_emu10k1_voice_half_loop_intr_disable(emu, voice);
}
}
val >>= 1;
pvoice++;
}
status &= ~(IPR_CHANNELLOOP | IPR_CHANNELNUMBERMASK);
}
if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) {
if (emu->capture_interrupt)
emu->capture_interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE);
status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL);
}
if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) {
if (emu->capture_mic_interrupt)
emu->capture_mic_interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE);
status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL);
}
if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) {
if (emu->capture_efx_interrupt)
emu->capture_efx_interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE);
status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL);
}
if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) {
if (emu->midi.interrupt)
emu->midi.interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE);
status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY);
}
if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) {
if (emu->midi2.interrupt)
emu->midi2.interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2);
status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2);
}
if (status & IPR_INTERVALTIMER) {
if (emu->timer)
snd_timer_interrupt(emu->timer, emu->timer->sticks);
else
snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB);
status &= ~IPR_INTERVALTIMER;
}
if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) {
if (emu->spdif_interrupt)
emu->spdif_interrupt(emu, status);
else
snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE);
status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE);
}
if (status & IPR_FXDSP) {
if (emu->dsp_interrupt)
emu->dsp_interrupt(emu);
else
snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE);
status &= ~IPR_FXDSP;
}
if (status & IPR_P16V) {
if (emu->p16v_interrupt)
emu->p16v_interrupt(emu);
else
outl(0, emu->port + INTE2);
status &= ~IPR_P16V;
}
if (status & IPR_A_GPIO) {
if (emu->gpio_interrupt)
emu->gpio_interrupt(emu);
else
snd_emu10k1_intr_disable(emu, INTE_A_GPIOENABLE);
status &= ~IPR_A_GPIO;
}
if (status) {
dev_err(emu->card->dev,
"unhandled interrupt: 0x%08x\n", status);
}
outl(orig_status, emu->port + IPR); /* ack all */
}
return IRQ_RETVAL(handled);
}
|
