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-rw-r--r--sound/pci/emu10k1/irq.c213
1 files changed, 213 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/irq.c b/sound/pci/emu10k1/irq.c
new file mode 100644
index 000000000..3c5c5e3dc
--- /dev/null
+++ b/sound/pci/emu10k1/irq.c
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ * Creative Labs, Inc.
+ * Routines for IRQ control of EMU10K1 chips
+ *
+ * BUGS:
+ * --
+ *
+ * TODO:
+ * --
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#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, status2, orig_status, orig_status2;
+ int handled = 0;
+ int timeout = 0;
+
+ while (((status = inl(emu->port + IPR)) != 0) && (timeout < 1000)) {
+ timeout++;
+ orig_status = status;
+ handled = 1;
+ if ((status & 0xffffffff) == 0xffffffff) {
+ dev_info(emu->card->dev,
+ "Suspected sound card removal\n");
+ break;
+ }
+ 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) {
+ int voice;
+ int voice_max = status & IPR_CHANNELNUMBERMASK;
+ u32 val;
+ struct snd_emu10k1_voice *pvoice = emu->voices;
+
+ val = snd_emu10k1_ptr_read(emu, CLIPL, 0);
+ 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);
+ 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;
+ }
+ status &= ~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) {
+ while ((status2 = inl(emu->port + IPR2)) != 0) {
+ u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */
+ struct snd_emu10k1_voice *pvoice = &(emu->p16v_voices[0]);
+ struct snd_emu10k1_voice *cvoice = &(emu->p16v_capture_voice);
+
+ /* dev_dbg(emu->card->dev, "status2=0x%x\n", status2); */
+ orig_status2 = status2;
+ if(status2 & mask) {
+ if(pvoice->use) {
+ snd_pcm_period_elapsed(pvoice->epcm->substream);
+ } else {
+ dev_err(emu->card->dev,
+ "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n",
+ status2, mask, pvoice,
+ pvoice->use);
+ }
+ }
+ if(status2 & 0x110000) {
+ /* dev_info(emu->card->dev, "capture int found\n"); */
+ if(cvoice->use) {
+ /* dev_info(emu->card->dev, "capture period_elapsed\n"); */
+ snd_pcm_period_elapsed(cvoice->epcm->substream);
+ }
+ }
+ outl(orig_status2, emu->port + IPR2); /* ack all */
+ }
+ status &= ~IPR_P16V;
+ }
+
+ if (status) {
+ unsigned int bits;
+ dev_err(emu->card->dev,
+ "unhandled interrupt: 0x%08x\n", status);
+ //make sure any interrupts we don't handle are disabled:
+ bits = INTE_FXDSPENABLE |
+ INTE_PCIERRORENABLE |
+ INTE_VOLINCRENABLE |
+ INTE_VOLDECRENABLE |
+ INTE_MUTEENABLE |
+ INTE_MICBUFENABLE |
+ INTE_ADCBUFENABLE |
+ INTE_EFXBUFENABLE |
+ INTE_GPSPDIFENABLE |
+ INTE_CDSPDIFENABLE |
+ INTE_INTERVALTIMERENB |
+ INTE_MIDITXENABLE |
+ INTE_MIDIRXENABLE;
+ if (emu->audigy)
+ bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2;
+ snd_emu10k1_intr_disable(emu, bits);
+ }
+ outl(orig_status, emu->port + IPR); /* ack all */
+ }
+ if (timeout == 1000)
+ dev_info(emu->card->dev, "emu10k1 irq routine failure\n");
+
+ return IRQ_RETVAL(handled);
+}
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