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199 lines
5.9 KiB
199 lines
5.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) by Jaroslav Kysela <[email protected]> |
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* Creative Labs, Inc. |
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* Routines for IRQ control of EMU10K1 chips |
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* |
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* BUGS: |
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* -- |
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* |
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* TODO: |
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* -- |
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*/ |
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#include <linux/time.h> |
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#include <sound/core.h> |
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#include <sound/emu10k1.h> |
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irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) |
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{ |
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struct snd_emu10k1 *emu = dev_id; |
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unsigned int status, status2, orig_status, orig_status2; |
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int handled = 0; |
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int timeout = 0; |
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while (((status = inl(emu->port + IPR)) != 0) && (timeout < 1000)) { |
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timeout++; |
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orig_status = status; |
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handled = 1; |
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if ((status & 0xffffffff) == 0xffffffff) { |
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dev_info(emu->card->dev, |
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"Suspected sound card removal\n"); |
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break; |
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} |
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if (status & IPR_PCIERROR) { |
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dev_err(emu->card->dev, "interrupt: PCI error\n"); |
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snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE); |
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status &= ~IPR_PCIERROR; |
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} |
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if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) { |
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if (emu->hwvol_interrupt) |
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emu->hwvol_interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE); |
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status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE); |
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} |
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if (status & IPR_CHANNELLOOP) { |
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int voice; |
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int voice_max = status & IPR_CHANNELNUMBERMASK; |
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u32 val; |
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struct snd_emu10k1_voice *pvoice = emu->voices; |
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val = snd_emu10k1_ptr_read(emu, CLIPL, 0); |
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for (voice = 0; voice <= voice_max; voice++) { |
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if (voice == 0x20) |
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val = snd_emu10k1_ptr_read(emu, CLIPH, 0); |
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if (val & 1) { |
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if (pvoice->use && pvoice->interrupt != NULL) { |
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pvoice->interrupt(emu, pvoice); |
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snd_emu10k1_voice_intr_ack(emu, voice); |
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} else { |
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snd_emu10k1_voice_intr_disable(emu, voice); |
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} |
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} |
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val >>= 1; |
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pvoice++; |
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} |
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val = snd_emu10k1_ptr_read(emu, HLIPL, 0); |
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for (voice = 0; voice <= voice_max; voice++) { |
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if (voice == 0x20) |
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val = snd_emu10k1_ptr_read(emu, HLIPH, 0); |
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if (val & 1) { |
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if (pvoice->use && pvoice->interrupt != NULL) { |
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pvoice->interrupt(emu, pvoice); |
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snd_emu10k1_voice_half_loop_intr_ack(emu, voice); |
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} else { |
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snd_emu10k1_voice_half_loop_intr_disable(emu, voice); |
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} |
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} |
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val >>= 1; |
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pvoice++; |
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} |
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status &= ~IPR_CHANNELLOOP; |
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} |
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status &= ~IPR_CHANNELNUMBERMASK; |
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if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) { |
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if (emu->capture_interrupt) |
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emu->capture_interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE); |
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status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL); |
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} |
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if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) { |
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if (emu->capture_mic_interrupt) |
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emu->capture_mic_interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE); |
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status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL); |
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} |
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if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) { |
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if (emu->capture_efx_interrupt) |
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emu->capture_efx_interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE); |
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status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL); |
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} |
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if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) { |
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if (emu->midi.interrupt) |
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emu->midi.interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE); |
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status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY); |
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} |
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if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) { |
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if (emu->midi2.interrupt) |
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emu->midi2.interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2); |
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status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2); |
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} |
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if (status & IPR_INTERVALTIMER) { |
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if (emu->timer) |
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snd_timer_interrupt(emu->timer, emu->timer->sticks); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB); |
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status &= ~IPR_INTERVALTIMER; |
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} |
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if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) { |
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if (emu->spdif_interrupt) |
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emu->spdif_interrupt(emu, status); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE); |
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status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE); |
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} |
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if (status & IPR_FXDSP) { |
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if (emu->dsp_interrupt) |
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emu->dsp_interrupt(emu); |
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else |
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snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE); |
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status &= ~IPR_FXDSP; |
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} |
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if (status & IPR_P16V) { |
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while ((status2 = inl(emu->port + IPR2)) != 0) { |
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u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */ |
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struct snd_emu10k1_voice *pvoice = &(emu->p16v_voices[0]); |
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struct snd_emu10k1_voice *cvoice = &(emu->p16v_capture_voice); |
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/* dev_dbg(emu->card->dev, "status2=0x%x\n", status2); */ |
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orig_status2 = status2; |
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if(status2 & mask) { |
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if(pvoice->use) { |
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snd_pcm_period_elapsed(pvoice->epcm->substream); |
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} else { |
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dev_err(emu->card->dev, |
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"p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", |
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status2, mask, pvoice, |
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pvoice->use); |
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} |
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} |
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if(status2 & 0x110000) { |
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/* dev_info(emu->card->dev, "capture int found\n"); */ |
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if(cvoice->use) { |
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/* dev_info(emu->card->dev, "capture period_elapsed\n"); */ |
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snd_pcm_period_elapsed(cvoice->epcm->substream); |
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} |
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} |
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outl(orig_status2, emu->port + IPR2); /* ack all */ |
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} |
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status &= ~IPR_P16V; |
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} |
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if (status) { |
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unsigned int bits; |
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dev_err(emu->card->dev, |
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"unhandled interrupt: 0x%08x\n", status); |
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//make sure any interrupts we don't handle are disabled: |
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bits = INTE_FXDSPENABLE | |
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INTE_PCIERRORENABLE | |
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INTE_VOLINCRENABLE | |
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INTE_VOLDECRENABLE | |
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INTE_MUTEENABLE | |
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INTE_MICBUFENABLE | |
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INTE_ADCBUFENABLE | |
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INTE_EFXBUFENABLE | |
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INTE_GPSPDIFENABLE | |
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INTE_CDSPDIFENABLE | |
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INTE_INTERVALTIMERENB | |
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INTE_MIDITXENABLE | |
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INTE_MIDIRXENABLE; |
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if (emu->audigy) |
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bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2; |
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snd_emu10k1_intr_disable(emu, bits); |
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} |
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outl(orig_status, emu->port + IPR); /* ack all */ |
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} |
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if (timeout == 1000) |
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dev_info(emu->card->dev, "emu10k1 irq routine failure\n"); |
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return IRQ_RETVAL(handled); |
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}
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