mirror of
https://github.com/torvalds/linux
synced 2024-07-22 03:01:14 +00:00
1a59d1b8e0
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Routine for IRQ handling from GF1/InterWave chip
|
|
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
|
|
*/
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/info.h>
|
|
#include <sound/gus.h>
|
|
|
|
#ifdef CONFIG_SND_DEBUG
|
|
#define STAT_ADD(x) ((x)++)
|
|
#else
|
|
#define STAT_ADD(x) while (0) { ; }
|
|
#endif
|
|
|
|
irqreturn_t snd_gus_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct snd_gus_card * gus = dev_id;
|
|
unsigned char status;
|
|
int loop = 100;
|
|
int handled = 0;
|
|
|
|
__again:
|
|
status = inb(gus->gf1.reg_irqstat);
|
|
if (status == 0)
|
|
return IRQ_RETVAL(handled);
|
|
handled = 1;
|
|
/* snd_printk(KERN_DEBUG "IRQ: status = 0x%x\n", status); */
|
|
if (status & 0x02) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_midi_in);
|
|
if (gus->gf1.interrupt_handler_midi_in)
|
|
gus->gf1.interrupt_handler_midi_in(gus);
|
|
}
|
|
if (status & 0x01) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_midi_out);
|
|
if (gus->gf1.interrupt_handler_midi_out)
|
|
gus->gf1.interrupt_handler_midi_out(gus);
|
|
}
|
|
if (status & (0x20 | 0x40)) {
|
|
unsigned int already, _current_;
|
|
unsigned char voice_status, voice;
|
|
struct snd_gus_voice *pvoice;
|
|
|
|
already = 0;
|
|
while (((voice_status = snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ)) & 0xc0) != 0xc0) {
|
|
voice = voice_status & 0x1f;
|
|
_current_ = 1 << voice;
|
|
if (already & _current_)
|
|
continue; /* multi request */
|
|
already |= _current_; /* mark request */
|
|
#if 0
|
|
printk(KERN_DEBUG "voice = %i, voice_status = 0x%x, "
|
|
"voice_verify = %i\n",
|
|
voice, voice_status, inb(GUSP(gus, GF1PAGE)));
|
|
#endif
|
|
pvoice = &gus->gf1.voices[voice];
|
|
if (pvoice->use) {
|
|
if (!(voice_status & 0x80)) { /* voice position IRQ */
|
|
STAT_ADD(pvoice->interrupt_stat_wave);
|
|
pvoice->handler_wave(gus, pvoice);
|
|
}
|
|
if (!(voice_status & 0x40)) { /* volume ramp IRQ */
|
|
STAT_ADD(pvoice->interrupt_stat_volume);
|
|
pvoice->handler_volume(gus, pvoice);
|
|
}
|
|
} else {
|
|
STAT_ADD(gus->gf1.interrupt_stat_voice_lost);
|
|
snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
|
|
snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
|
|
}
|
|
}
|
|
}
|
|
if (status & 0x04) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_timer1);
|
|
if (gus->gf1.interrupt_handler_timer1)
|
|
gus->gf1.interrupt_handler_timer1(gus);
|
|
}
|
|
if (status & 0x08) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_timer2);
|
|
if (gus->gf1.interrupt_handler_timer2)
|
|
gus->gf1.interrupt_handler_timer2(gus);
|
|
}
|
|
if (status & 0x80) {
|
|
if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_dma_write);
|
|
if (gus->gf1.interrupt_handler_dma_write)
|
|
gus->gf1.interrupt_handler_dma_write(gus);
|
|
}
|
|
if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) {
|
|
STAT_ADD(gus->gf1.interrupt_stat_dma_read);
|
|
if (gus->gf1.interrupt_handler_dma_read)
|
|
gus->gf1.interrupt_handler_dma_read(gus);
|
|
}
|
|
}
|
|
if (--loop > 0)
|
|
goto __again;
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
#ifdef CONFIG_SND_DEBUG
|
|
static void snd_gus_irq_info_read(struct snd_info_entry *entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
struct snd_gus_card *gus;
|
|
struct snd_gus_voice *pvoice;
|
|
int idx;
|
|
|
|
gus = entry->private_data;
|
|
snd_iprintf(buffer, "midi out = %u\n", gus->gf1.interrupt_stat_midi_out);
|
|
snd_iprintf(buffer, "midi in = %u\n", gus->gf1.interrupt_stat_midi_in);
|
|
snd_iprintf(buffer, "timer1 = %u\n", gus->gf1.interrupt_stat_timer1);
|
|
snd_iprintf(buffer, "timer2 = %u\n", gus->gf1.interrupt_stat_timer2);
|
|
snd_iprintf(buffer, "dma write = %u\n", gus->gf1.interrupt_stat_dma_write);
|
|
snd_iprintf(buffer, "dma read = %u\n", gus->gf1.interrupt_stat_dma_read);
|
|
snd_iprintf(buffer, "voice lost = %u\n", gus->gf1.interrupt_stat_voice_lost);
|
|
for (idx = 0; idx < 32; idx++) {
|
|
pvoice = &gus->gf1.voices[idx];
|
|
snd_iprintf(buffer, "voice %i: wave = %u, volume = %u\n",
|
|
idx,
|
|
pvoice->interrupt_stat_wave,
|
|
pvoice->interrupt_stat_volume);
|
|
}
|
|
}
|
|
|
|
void snd_gus_irq_profile_init(struct snd_gus_card *gus)
|
|
{
|
|
snd_card_ro_proc_new(gus->card, "gusirq", gus, snd_gus_irq_info_read);
|
|
}
|
|
|
|
#endif
|