diff options
Diffstat (limited to 'sound/pci/emu10k1/irq.c')
| -rw-r--r-- | sound/pci/emu10k1/irq.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/irq.c b/sound/pci/emu10k1/irq.c new file mode 100644 index 0000000000..71aa90b9cc --- /dev/null +++ b/sound/pci/emu10k1/irq.c @@ -0,0 +1,162 @@ +// 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); +} |