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02a0d9c281
Detach it better from the main PCM driver, which it really doesn't have much in common with. In particular, this moves the interrupt handler implementation into p16v.c, and makes it access the substream runtime status more directly, so it doesn't need to abuse structs snd_emu10k1_pcm and snd_emu10k1_voice any more. We don't need private pcm runtime data at all, as the only thing it was used for (except the back-link to the substream) was the `running` flag. So store that directly in runtime->private_data. This somewhat radical strip-down shows that this driver contains some complexity that was never actually utilized. I suppose the right way to fully utilize the hardware in a simple way would be introducing more substreams. This wouldn't require any of the removed code. Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de> Link: https://lore.kernel.org/r/20230421141006.1005452-7-oswald.buddenhagen@gmx.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
178 lines
5.1 KiB
C
178 lines
5.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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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, orig_status;
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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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if (emu->p16v_interrupt)
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emu->p16v_interrupt(emu);
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else
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outl(0, emu->port + INTE2);
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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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