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linux/sound/isa/gus/gus_io.c
Dr. David Alan Gilbert 5d51fdd122 ALSA: gus: Remove deadcode 
snd_gus_use_dec(), snd_gus_use_inc() and snd_gf1_print_voice_registers()
last uses were removed in 2007 by
commit e5723b41ab ("[ALSA] Remove sequencer instrument layer")

Remove them.

While there, remove big #if 0 blocks next to the code being deleted.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://patch.msgid.link/20250508000225.195766-1-linux@treblig.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-05-08 11:52:25 +02:00

377 lines
9.4 KiB
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* I/O routines for GF1/InterWave synthesizer chips
*/
#include <linux/delay.h>
#include <linux/time.h>
#include <sound/core.h>
#include <sound/gus.h>
void snd_gf1_delay(struct snd_gus_card * gus)
{
int i;
for (i = 0; i < 6; i++) {
mb();
inb(GUSP(gus, DRAM));
}
}
/*
* =======================================================================
*/
/*
* ok.. stop of control registers (wave & ramp) need some special things..
* big UltraClick (tm) elimination...
*/
static inline void __snd_gf1_ctrl_stop(struct snd_gus_card * gus, unsigned char reg)
{
unsigned char value;
outb(reg | 0x80, gus->gf1.reg_regsel);
mb();
value = inb(gus->gf1.reg_data8);
mb();
outb(reg, gus->gf1.reg_regsel);
mb();
outb((value | 0x03) & ~(0x80 | 0x20), gus->gf1.reg_data8);
mb();
}
static inline void __snd_gf1_write8(struct snd_gus_card * gus,
unsigned char reg,
unsigned char data)
{
outb(reg, gus->gf1.reg_regsel);
mb();
outb(data, gus->gf1.reg_data8);
mb();
}
static inline unsigned char __snd_gf1_look8(struct snd_gus_card * gus,
unsigned char reg)
{
outb(reg, gus->gf1.reg_regsel);
mb();
return inb(gus->gf1.reg_data8);
}
static inline void __snd_gf1_write16(struct snd_gus_card * gus,
unsigned char reg, unsigned int data)
{
outb(reg, gus->gf1.reg_regsel);
mb();
outw((unsigned short) data, gus->gf1.reg_data16);
mb();
}
static inline unsigned short __snd_gf1_look16(struct snd_gus_card * gus,
unsigned char reg)
{
outb(reg, gus->gf1.reg_regsel);
mb();
return inw(gus->gf1.reg_data16);
}
static inline void __snd_gf1_adlib_write(struct snd_gus_card * gus,
unsigned char reg, unsigned char data)
{
outb(reg, gus->gf1.reg_timerctrl);
inb(gus->gf1.reg_timerctrl);
inb(gus->gf1.reg_timerctrl);
outb(data, gus->gf1.reg_timerdata);
inb(gus->gf1.reg_timerctrl);
inb(gus->gf1.reg_timerctrl);
}
static inline void __snd_gf1_write_addr(struct snd_gus_card * gus, unsigned char reg,
unsigned int addr, int w_16bit)
{
if (gus->gf1.enh_mode) {
if (w_16bit)
addr = ((addr >> 1) & ~0x0000000f) | (addr & 0x0000000f);
__snd_gf1_write8(gus, SNDRV_GF1_VB_UPPER_ADDRESS, (unsigned char) ((addr >> 26) & 0x03));
} else if (w_16bit)
addr = (addr & 0x00c0000f) | ((addr & 0x003ffff0) >> 1);
__snd_gf1_write16(gus, reg, (unsigned short) (addr >> 11));
__snd_gf1_write16(gus, reg + 1, (unsigned short) (addr << 5));
}
static inline unsigned int __snd_gf1_read_addr(struct snd_gus_card * gus,
unsigned char reg, short w_16bit)
{
unsigned int res;
res = ((unsigned int) __snd_gf1_look16(gus, reg | 0x80) << 11) & 0xfff800;
res |= ((unsigned int) __snd_gf1_look16(gus, (reg + 1) | 0x80) >> 5) & 0x0007ff;
if (gus->gf1.enh_mode) {
res |= (unsigned int) __snd_gf1_look8(gus, SNDRV_GF1_VB_UPPER_ADDRESS | 0x80) << 26;
if (w_16bit)
res = ((res << 1) & 0xffffffe0) | (res & 0x0000000f);
} else if (w_16bit)
res = ((res & 0x001ffff0) << 1) | (res & 0x00c0000f);
return res;
}
/*
* =======================================================================
*/
void snd_gf1_ctrl_stop(struct snd_gus_card * gus, unsigned char reg)
{
__snd_gf1_ctrl_stop(gus, reg);
}
void snd_gf1_write8(struct snd_gus_card * gus,
unsigned char reg,
unsigned char data)
{
__snd_gf1_write8(gus, reg, data);
}
unsigned char snd_gf1_look8(struct snd_gus_card * gus, unsigned char reg)
{
return __snd_gf1_look8(gus, reg);
}
void snd_gf1_write16(struct snd_gus_card * gus,
unsigned char reg,
unsigned int data)
{
__snd_gf1_write16(gus, reg, data);
}
unsigned short snd_gf1_look16(struct snd_gus_card * gus, unsigned char reg)
{
return __snd_gf1_look16(gus, reg);
}
void snd_gf1_adlib_write(struct snd_gus_card * gus,
unsigned char reg,
unsigned char data)
{
__snd_gf1_adlib_write(gus, reg, data);
}
void snd_gf1_write_addr(struct snd_gus_card * gus, unsigned char reg,
unsigned int addr, short w_16bit)
{
__snd_gf1_write_addr(gus, reg, addr, w_16bit);
}
unsigned int snd_gf1_read_addr(struct snd_gus_card * gus,
unsigned char reg,
short w_16bit)
{
return __snd_gf1_read_addr(gus, reg, w_16bit);
}
/*
*/
void snd_gf1_i_ctrl_stop(struct snd_gus_card * gus, unsigned char reg)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
__snd_gf1_ctrl_stop(gus, reg);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
void snd_gf1_i_write8(struct snd_gus_card * gus,
unsigned char reg,
unsigned char data)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
__snd_gf1_write8(gus, reg, data);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
unsigned char snd_gf1_i_look8(struct snd_gus_card * gus, unsigned char reg)
{
unsigned long flags;
unsigned char res;
spin_lock_irqsave(&gus->reg_lock, flags);
res = __snd_gf1_look8(gus, reg);
spin_unlock_irqrestore(&gus->reg_lock, flags);
return res;
}
void snd_gf1_i_write16(struct snd_gus_card * gus,
unsigned char reg,
unsigned int data)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
__snd_gf1_write16(gus, reg, data);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
unsigned short snd_gf1_i_look16(struct snd_gus_card * gus, unsigned char reg)
{
unsigned long flags;
unsigned short res;
spin_lock_irqsave(&gus->reg_lock, flags);
res = __snd_gf1_look16(gus, reg);
spin_unlock_irqrestore(&gus->reg_lock, flags);
return res;
}
void snd_gf1_dram_addr(struct snd_gus_card * gus, unsigned int addr)
{
outb(0x43, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(0x44, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
}
void snd_gf1_poke(struct snd_gus_card * gus, unsigned int addr, unsigned char data)
{
unsigned long flags;
spin_lock_irqsave(&gus->reg_lock, flags);
outb(SNDRV_GF1_GW_DRAM_IO_LOW, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(SNDRV_GF1_GB_DRAM_IO_HIGH, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
outb(data, gus->gf1.reg_dram);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
unsigned char snd_gf1_peek(struct snd_gus_card * gus, unsigned int addr)
{
unsigned long flags;
unsigned char res;
spin_lock_irqsave(&gus->reg_lock, flags);
outb(SNDRV_GF1_GW_DRAM_IO_LOW, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(SNDRV_GF1_GB_DRAM_IO_HIGH, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
res = inb(gus->gf1.reg_dram);
spin_unlock_irqrestore(&gus->reg_lock, flags);
return res;
}
#if 0
void snd_gf1_pokew(struct snd_gus_card * gus, unsigned int addr, unsigned short data)
{
unsigned long flags;
if (!gus->interwave)
dev_dbg(gus->card->dev, "%s - GF1!!!\n", __func__);
spin_lock_irqsave(&gus->reg_lock, flags);
outb(SNDRV_GF1_GW_DRAM_IO_LOW, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(SNDRV_GF1_GB_DRAM_IO_HIGH, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
outb(SNDRV_GF1_GW_DRAM_IO16, gus->gf1.reg_regsel);
mb();
outw(data, gus->gf1.reg_data16);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
unsigned short snd_gf1_peekw(struct snd_gus_card * gus, unsigned int addr)
{
unsigned long flags;
unsigned short res;
if (!gus->interwave)
dev_dbg(gus->card->dev, "%s - GF1!!!\n", __func__);
spin_lock_irqsave(&gus->reg_lock, flags);
outb(SNDRV_GF1_GW_DRAM_IO_LOW, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(SNDRV_GF1_GB_DRAM_IO_HIGH, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
outb(SNDRV_GF1_GW_DRAM_IO16, gus->gf1.reg_regsel);
mb();
res = inw(gus->gf1.reg_data16);
spin_unlock_irqrestore(&gus->reg_lock, flags);
return res;
}
void snd_gf1_dram_setmem(struct snd_gus_card * gus, unsigned int addr,
unsigned short value, unsigned int count)
{
unsigned long port;
unsigned long flags;
if (!gus->interwave)
dev_dbg(gus->card->dev, "%s - GF1!!!\n", __func__);
addr &= ~1;
count >>= 1;
port = GUSP(gus, GF1DATALOW);
spin_lock_irqsave(&gus->reg_lock, flags);
outb(SNDRV_GF1_GW_DRAM_IO_LOW, gus->gf1.reg_regsel);
mb();
outw((unsigned short) addr, gus->gf1.reg_data16);
mb();
outb(SNDRV_GF1_GB_DRAM_IO_HIGH, gus->gf1.reg_regsel);
mb();
outb((unsigned char) (addr >> 16), gus->gf1.reg_data8);
mb();
outb(SNDRV_GF1_GW_DRAM_IO16, gus->gf1.reg_regsel);
while (count--)
outw(value, port);
spin_unlock_irqrestore(&gus->reg_lock, flags);
}
#endif /* 0 */
void snd_gf1_select_active_voices(struct snd_gus_card * gus)
{
unsigned short voices;
static const unsigned short voices_tbl[32 - 14 + 1] =
{
44100, 41160, 38587, 36317, 34300, 32494, 30870, 29400, 28063, 26843,
25725, 24696, 23746, 22866, 22050, 21289, 20580, 19916, 19293
};
voices = gus->gf1.active_voices;
if (voices > 32)
voices = 32;
if (voices < 14)
voices = 14;
if (gus->gf1.enh_mode)
voices = 32;
gus->gf1.active_voices = voices;
gus->gf1.playback_freq =
gus->gf1.enh_mode ? 44100 : voices_tbl[voices - 14];
if (!gus->gf1.enh_mode) {
snd_gf1_i_write8(gus, SNDRV_GF1_GB_ACTIVE_VOICES, 0xc0 | (voices - 1));
udelay(100);
}
}
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