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linux-brain/sound/isa/gus/gus_reset.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 
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>
2019-05-30 11:26:35 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/gus.h>
extern void snd_gf1_timers_init(struct snd_gus_card * gus);
extern void snd_gf1_timers_done(struct snd_gus_card * gus);
extern int snd_gf1_synth_init(struct snd_gus_card * gus);
extern void snd_gf1_synth_done(struct snd_gus_card * gus);
/*
* ok.. default interrupt handlers...
*/
static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
{
snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
}
static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
{
snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
}
static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
{
snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
}
static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
{
snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
}
static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
{
snd_gf1_i_ctrl_stop(gus, 0x00);
snd_gf1_i_ctrl_stop(gus, 0x0d);
}
static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
{
snd_gf1_i_write8(gus, 0x41, 0x00);
}
static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
{
snd_gf1_i_write8(gus, 0x49, 0x00);
}
void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
{
if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
if (what & SNDRV_GF1_HANDLER_MIDI_IN)
gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
if (what & SNDRV_GF1_HANDLER_TIMER1)
gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
if (what & SNDRV_GF1_HANDLER_TIMER2)
gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
if (what & SNDRV_GF1_HANDLER_VOICE) {
struct snd_gus_voice *voice;
voice = &gus->gf1.voices[what & 0xffff];
voice->handler_wave =
voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
voice->handler_effect = NULL;
voice->volume_change = NULL;
}
if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
if (what & SNDRV_GF1_HANDLER_DMA_READ)
gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
}
/*
*/
static void snd_gf1_clear_regs(struct snd_gus_card * gus)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
inb(GUSP(gus, IRQSTAT));
snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
static void snd_gf1_look_regs(struct snd_gus_card * gus)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
inb(GUSP(gus, IRQSTAT));
snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
/*
* put selected GF1 voices to initial stage...
*/
void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
snd_gf1_select_voice(gus, voice);
#if 0
printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
#endif
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
snd_gf1_select_voice(gus, voice);
#if 0
printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
#endif
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
if (gus->gf1.enh_mode)
snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
spin_unlock_irqrestore(&gus->reg_lock, flags);
#if 0
snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
#endif
}
static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
unsigned short v_max)
{
unsigned long flags;
unsigned int daddr;
unsigned short i, w_16;
daddr = gus->gf1.default_voice_address << 4;
for (i = v_min; i <= v_max; i++) {
#if 0
if (gus->gf1.syn_voices)
gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
#endif
spin_lock_irqsave(&gus->reg_lock, flags);
snd_gf1_select_voice(gus, i);
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
if (gus->gf1.enh_mode)
snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
if (gus->gf1.enh_mode) {
snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
}
spin_unlock_irqrestore(&gus->reg_lock, flags);
#if 0
snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
#endif
}
}
void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
{
unsigned long flags;
short i, ramp_ok;
unsigned short ramp_end;
if (!in_interrupt()) { /* this can't be done in interrupt */
for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
spin_lock_irqsave(&gus->reg_lock, flags);
snd_gf1_select_voice(gus, i);
ramp_end = snd_gf1_read16(gus, 9) >> 8;
if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
ramp_ok++;
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
if (gus->gf1.enh_mode) {
snd_gf1_delay(gus);
snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
}
}
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
msleep_interruptible(50);
}
snd_gf1_clear_voices(gus, v_min, v_max);
}
static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus,
struct snd_gus_voice * pvoice,
int type, int client, int port)
{
pvoice->use = 1;
switch (type) {
case SNDRV_GF1_VOICE_TYPE_PCM:
gus->gf1.pcm_alloc_voices++;
pvoice->pcm = 1;
break;
case SNDRV_GF1_VOICE_TYPE_SYNTH:
pvoice->synth = 1;
pvoice->client = client;
pvoice->port = port;
break;
case SNDRV_GF1_VOICE_TYPE_MIDI:
pvoice->midi = 1;
pvoice->client = client;
pvoice->port = port;
break;
}
}
struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
{
struct snd_gus_voice *pvoice;
unsigned long flags;
int idx;
spin_lock_irqsave(&gus->voice_alloc, flags);
if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
spin_unlock_irqrestore(&gus->voice_alloc, flags);
return NULL;
}
}
for (idx = 0; idx < 32; idx++) {
pvoice = &gus->gf1.voices[idx];
if (!pvoice->use) {
snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
spin_unlock_irqrestore(&gus->voice_alloc, flags);
return pvoice;
}
}
for (idx = 0; idx < 32; idx++) {
pvoice = &gus->gf1.voices[idx];
if (pvoice->midi && !pvoice->client) {
snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
spin_unlock_irqrestore(&gus->voice_alloc, flags);
return pvoice;
}
}
spin_unlock_irqrestore(&gus->voice_alloc, flags);
return NULL;
}
void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
{
unsigned long flags;
void (*private_free)(struct snd_gus_voice *voice);
if (voice == NULL || !voice->use)
return;
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
snd_gf1_clear_voices(gus, voice->number, voice->number);
spin_lock_irqsave(&gus->voice_alloc, flags);
private_free = voice->private_free;
voice->private_free = NULL;
voice->private_data = NULL;
if (voice->pcm)
gus->gf1.pcm_alloc_voices--;
voice->use = voice->pcm = 0;
voice->sample_ops = NULL;
spin_unlock_irqrestore(&gus->voice_alloc, flags);
if (private_free)
private_free(voice);
}
/*
* call this function only by start of driver
*/
int snd_gf1_start(struct snd_gus_card * gus)
{
unsigned long flags;
unsigned int i;
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
for (i = 0; i < 32; i++) {
gus->gf1.voices[i].number = i;
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
}
snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
}
snd_gf1_clear_regs(gus);
snd_gf1_select_active_voices(gus);
snd_gf1_delay(gus);
gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
/* initialize LFOs & clear LFOs memory */
if (gus->gf1.enh_mode && gus->gf1.memory) {
gus->gf1.hw_lfo = 1;
gus->gf1.default_voice_address += 1024;
} else {
gus->gf1.sw_lfo = 1;
}
#if 0
snd_gf1_lfo_init(gus);
#endif
if (gus->gf1.memory > 0)
for (i = 0; i < 4; i++)
snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
snd_gf1_clear_regs(gus);
snd_gf1_clear_voices(gus, 0, 31);
snd_gf1_look_regs(gus);
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
}
while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
spin_lock_irqsave(&gus->reg_lock, flags);
outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
spin_unlock_irqrestore(&gus->reg_lock, flags);
snd_gf1_timers_init(gus);
snd_gf1_look_regs(gus);
snd_gf1_mem_init(gus);
snd_gf1_mem_proc_init(gus);
#ifdef CONFIG_SND_DEBUG
snd_gus_irq_profile_init(gus);
#endif
#if 0
if (gus->pnp_flag) {
if (gus->chip.playback_fifo_size > 0)
snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
if (gus->chip.record_fifo_size > 0)
snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
}
#endif
return 0;
}
/*
* call this function only by shutdown of driver
*/
int snd_gf1_stop(struct snd_gus_card * gus)
{
snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
snd_gf1_timers_done(gus);
snd_gf1_mem_done(gus);
#if 0
snd_gf1_lfo_done(gus);
#endif
return 0;
}
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