diff options
Diffstat (limited to 'sound/isa/gus/gus_reset.c')
| -rw-r--r-- | sound/isa/gus/gus_reset.c | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/sound/isa/gus/gus_reset.c b/sound/isa/gus/gus_reset.c new file mode 100644 index 00000000..3d1fed0c --- /dev/null +++ b/sound/isa/gus/gus_reset.c @@ -0,0 +1,413 @@ +/* + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * + * + * 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 <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); + void *private_data; + + 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; + private_data = voice->private_data; + 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; +} |