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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/pci/emu10k1/irq.c | |
download | kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_goldelico_gta04-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/pci/emu10k1/irq.c')
-rw-r--r-- | sound/pci/emu10k1/irq.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/irq.c b/sound/pci/emu10k1/irq.c new file mode 100644 index 0000000..b81a7ca --- /dev/null +++ b/sound/pci/emu10k1/irq.c @@ -0,0 +1,189 @@ +/* + * Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h> +#include <linux/time.h> +#include <sound/core.h> +#include <sound/emu10k1.h> + +irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + emu10k1_t *emu = dev_id; + unsigned int status, status2, orig_status, orig_status2; + int handled = 0; + + while ((status = inl(emu->port + IPR)) != 0) { + // printk("irq - status = 0x%x\n", status); + orig_status = status; + handled = 1; + if (status & IPR_PCIERROR) { + snd_printk("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; + emu10k1_voice_t *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) { + unsigned int bits; + //snd_printk(KERN_ERR "emu10k1: 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 (emu->audigy && emu->revision == 4) { /* P16V */ + while ((status2 = inl(emu->port + IPR2)) != 0) { + u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */ + emu10k1_voice_t *pvoice = &(emu->p16v_voices[0]); + orig_status2 = status2; + if(status2 & mask) { + if(pvoice->use) { + snd_pcm_period_elapsed(pvoice->epcm->substream); + } else { + snd_printk(KERN_ERR "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", status2, mask, pvoice, pvoice->use); + } + } + outl(orig_status2, emu->port + IPR2); /* ack all */ + } + } + return IRQ_RETVAL(handled); +} |