903 lines
29 KiB
C
903 lines
29 KiB
C
/*
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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* Routines for control of GF1 chip (PCM things)
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*
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* InterWave chips supports interleaved DMA, but this feature isn't used in
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* this code.
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*
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* This code emulates autoinit DMA transfer for playback, recording by GF1
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* chip doesn't support autoinit DMA.
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <asm/dma.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#include <sound/gus.h>
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#include <sound/pcm_params.h>
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#include "gus_tables.h"
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/* maximum rate */
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#define SNDRV_GF1_PCM_RATE 48000
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#define SNDRV_GF1_PCM_PFLG_NONE 0
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#define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0)
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#define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0)
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typedef struct {
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snd_gus_card_t * gus;
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snd_pcm_substream_t * substream;
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spinlock_t lock;
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unsigned int voices;
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snd_gus_voice_t *pvoices[2];
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unsigned int memory;
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unsigned short flags;
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unsigned char voice_ctrl, ramp_ctrl;
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unsigned int bpos;
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unsigned int blocks;
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unsigned int block_size;
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unsigned int dma_size;
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wait_queue_head_t sleep;
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atomic_t dma_count;
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int final_volume;
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} gus_pcm_private_t;
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static int snd_gf1_pcm_use_dma = 1;
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static void snd_gf1_pcm_block_change_ack(snd_gus_card_t * gus, void *private_data)
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{
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gus_pcm_private_t *pcmp = private_data;
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if (pcmp) {
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atomic_dec(&pcmp->dma_count);
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wake_up(&pcmp->sleep);
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}
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}
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static int snd_gf1_pcm_block_change(snd_pcm_substream_t * substream,
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unsigned int offset,
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unsigned int addr,
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unsigned int count)
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{
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snd_gf1_dma_block_t block;
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snd_pcm_runtime_t *runtime = substream->runtime;
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gus_pcm_private_t *pcmp = runtime->private_data;
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count += offset & 31;
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offset &= ~31;
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// snd_printk("block change - offset = 0x%x, count = 0x%x\n", offset, count);
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memset(&block, 0, sizeof(block));
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block.cmd = SNDRV_GF1_DMA_IRQ;
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if (snd_pcm_format_unsigned(runtime->format))
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block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
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if (snd_pcm_format_width(runtime->format) == 16)
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block.cmd |= SNDRV_GF1_DMA_16BIT;
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block.addr = addr & ~31;
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block.buffer = runtime->dma_area + offset;
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block.buf_addr = runtime->dma_addr + offset;
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block.count = count;
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block.private_data = pcmp;
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block.ack = snd_gf1_pcm_block_change_ack;
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if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
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atomic_inc(&pcmp->dma_count);
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return 0;
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}
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static void snd_gf1_pcm_trigger_up(snd_pcm_substream_t * substream)
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{
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snd_pcm_runtime_t *runtime = substream->runtime;
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gus_pcm_private_t *pcmp = runtime->private_data;
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snd_gus_card_t * gus = pcmp->gus;
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unsigned long flags;
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unsigned char voice_ctrl, ramp_ctrl;
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unsigned short rate;
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unsigned int curr, begin, end;
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unsigned short vol;
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unsigned char pan;
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unsigned int voice;
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if (substream == NULL)
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return;
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spin_lock_irqsave(&pcmp->lock, flags);
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if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
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spin_unlock_irqrestore(&pcmp->lock, flags);
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return;
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}
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pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
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pcmp->final_volume = 0;
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spin_unlock_irqrestore(&pcmp->lock, flags);
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rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
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/* enable WAVE IRQ */
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voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
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/* enable RAMP IRQ + rollover */
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ramp_ctrl = 0x24;
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if (pcmp->blocks == 1) {
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voice_ctrl |= 0x08; /* loop enable */
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ramp_ctrl &= ~0x04; /* disable rollover */
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}
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for (voice = 0; voice < pcmp->voices; voice++) {
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begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
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curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
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end = curr + (pcmp->block_size / runtime->channels);
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end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
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// snd_printk("init: curr=0x%x, begin=0x%x, end=0x%x, ctrl=0x%x, ramp=0x%x, rate=0x%x\n", curr, begin, end, voice_ctrl, ramp_ctrl, rate);
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pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
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vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
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snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
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snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
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snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
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if (!gus->gf1.enh_mode) {
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snd_gf1_delay(gus);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
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}
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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spin_lock_irqsave(&gus->reg_lock, flags);
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for (voice = 0; voice < pcmp->voices; voice++) {
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snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
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if (gus->gf1.enh_mode)
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snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
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snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
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voice_ctrl &= ~0x20;
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}
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voice_ctrl |= 0x20;
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if (!gus->gf1.enh_mode) {
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snd_gf1_delay(gus);
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for (voice = 0; voice < pcmp->voices; voice++) {
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snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
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snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
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voice_ctrl &= ~0x20; /* disable IRQ for next voice */
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}
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}
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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static void snd_gf1_pcm_interrupt_wave(snd_gus_card_t * gus, snd_gus_voice_t *pvoice)
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{
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gus_pcm_private_t * pcmp;
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snd_pcm_runtime_t * runtime;
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unsigned char voice_ctrl, ramp_ctrl;
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unsigned int idx;
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unsigned int end, step;
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if (!pvoice->private_data) {
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snd_printd("snd_gf1_pcm: unknown wave irq?\n");
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snd_gf1_smart_stop_voice(gus, pvoice->number);
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return;
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}
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pcmp = pvoice->private_data;
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if (pcmp == NULL) {
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snd_printd("snd_gf1_pcm: unknown wave irq?\n");
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snd_gf1_smart_stop_voice(gus, pvoice->number);
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return;
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}
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gus = pcmp->gus;
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runtime = pcmp->substream->runtime;
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spin_lock(&gus->reg_lock);
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snd_gf1_select_voice(gus, pvoice->number);
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voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
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ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
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#if 0
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snd_gf1_select_voice(gus, pvoice->number);
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printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
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snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
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printk("position = 0x%x\n", (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
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snd_gf1_select_voice(gus, pvoice->number);
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#endif
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pcmp->bpos++;
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pcmp->bpos %= pcmp->blocks;
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if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
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voice_ctrl |= 0x08; /* enable loop */
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} else {
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ramp_ctrl |= 0x04; /* enable rollover */
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}
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end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
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end -= voice_ctrl & 4 ? 2 : 1;
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step = pcmp->dma_size / runtime->channels;
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voice_ctrl |= 0x20;
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if (!pcmp->final_volume) {
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ramp_ctrl |= 0x20;
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ramp_ctrl &= ~0x03;
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}
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for (idx = 0; idx < pcmp->voices; idx++, end += step) {
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snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
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snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
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voice_ctrl &= ~0x20;
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}
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if (!gus->gf1.enh_mode) {
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snd_gf1_delay(gus);
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voice_ctrl |= 0x20;
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for (idx = 0; idx < pcmp->voices; idx++) {
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snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
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snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
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voice_ctrl &= ~0x20;
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}
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}
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spin_unlock(&gus->reg_lock);
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snd_pcm_period_elapsed(pcmp->substream);
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#if 0
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if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
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*runtime->state == SNDRV_PCM_STATE_RUNNING) {
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end = pcmp->bpos * pcmp->block_size;
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if (runtime->channels > 1) {
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snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
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snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
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} else {
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snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
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}
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}
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#endif
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}
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static void snd_gf1_pcm_interrupt_volume(snd_gus_card_t * gus, snd_gus_voice_t * pvoice)
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{
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unsigned short vol;
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int cvoice;
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gus_pcm_private_t *pcmp = pvoice->private_data;
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/* stop ramp, but leave rollover bit untouched */
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spin_lock(&gus->reg_lock);
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snd_gf1_select_voice(gus, pvoice->number);
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
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spin_unlock(&gus->reg_lock);
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if (pcmp == NULL)
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return;
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/* are we active? */
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if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
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return;
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/* load real volume - better precision */
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cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
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if (pcmp->substream == NULL)
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return;
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vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
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spin_lock(&gus->reg_lock);
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snd_gf1_select_voice(gus, pvoice->number);
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snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
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pcmp->final_volume = 1;
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spin_unlock(&gus->reg_lock);
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}
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static void snd_gf1_pcm_volume_change(snd_gus_card_t * gus)
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{
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}
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static int snd_gf1_pcm_poke_block(snd_gus_card_t *gus, unsigned char *buf,
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unsigned int pos, unsigned int count,
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int w16, int invert)
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{
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unsigned int len;
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unsigned long flags;
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// printk("poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", (int)buf, pos, count, gus->gf1.port);
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while (count > 0) {
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len = count;
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if (len > 512) /* limit, to allow IRQ */
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len = 512;
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count -= len;
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if (gus->interwave) {
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
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snd_gf1_dram_addr(gus, pos);
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if (w16) {
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outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
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outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
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} else {
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outsb(GUSP(gus, DRAM), buf, len);
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}
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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buf += 512;
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pos += 512;
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} else {
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invert = invert ? 0x80 : 0x00;
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if (w16) {
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len >>= 1;
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while (len--) {
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snd_gf1_poke(gus, pos++, *buf++);
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snd_gf1_poke(gus, pos++, *buf++ ^ invert);
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}
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} else {
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while (len--)
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snd_gf1_poke(gus, pos++, *buf++ ^ invert);
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}
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}
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if (count > 0 && !in_interrupt()) {
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(1);
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if (signal_pending(current))
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return -EAGAIN;
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}
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}
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return 0;
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}
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static int snd_gf1_pcm_playback_copy(snd_pcm_substream_t *substream,
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int voice,
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snd_pcm_uframes_t pos,
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void __user *src,
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snd_pcm_uframes_t count)
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{
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snd_pcm_runtime_t *runtime = substream->runtime;
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gus_pcm_private_t *pcmp = runtime->private_data;
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unsigned int bpos, len;
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bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
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len = samples_to_bytes(runtime, count);
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snd_assert(bpos <= pcmp->dma_size, return -EIO);
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snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
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if (copy_from_user(runtime->dma_area + bpos, src, len))
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return -EFAULT;
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if (snd_gf1_pcm_use_dma && len > 32) {
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return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
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} else {
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snd_gus_card_t *gus = pcmp->gus;
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int err, w16, invert;
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w16 = (snd_pcm_format_width(runtime->format) == 16);
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invert = snd_pcm_format_unsigned(runtime->format);
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if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
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return err;
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}
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return 0;
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}
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static int snd_gf1_pcm_playback_silence(snd_pcm_substream_t *substream,
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int voice,
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snd_pcm_uframes_t pos,
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snd_pcm_uframes_t count)
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{
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snd_pcm_runtime_t *runtime = substream->runtime;
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gus_pcm_private_t *pcmp = runtime->private_data;
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unsigned int bpos, len;
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bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
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len = samples_to_bytes(runtime, count);
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snd_assert(bpos <= pcmp->dma_size, return -EIO);
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snd_assert(bpos + len <= pcmp->dma_size, return -EIO);
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snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
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if (snd_gf1_pcm_use_dma && len > 32) {
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return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
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} else {
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snd_gus_card_t *gus = pcmp->gus;
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int err, w16, invert;
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w16 = (snd_pcm_format_width(runtime->format) == 16);
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invert = snd_pcm_format_unsigned(runtime->format);
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if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
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return err;
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}
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return 0;
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}
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static int snd_gf1_pcm_playback_hw_params(snd_pcm_substream_t * substream,
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snd_pcm_hw_params_t * hw_params)
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{
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snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
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snd_pcm_runtime_t *runtime = substream->runtime;
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gus_pcm_private_t *pcmp = runtime->private_data;
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int err;
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if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
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return err;
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if (err > 0) { /* change */
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snd_gf1_mem_block_t *block;
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if (pcmp->memory > 0) {
|
|
snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
|
|
pcmp->memory = 0;
|
|
}
|
|
if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
|
|
SNDRV_GF1_MEM_OWNER_DRIVER,
|
|
"GF1 PCM",
|
|
runtime->dma_bytes, 1, 32,
|
|
NULL)) == NULL)
|
|
return -ENOMEM;
|
|
pcmp->memory = block->ptr;
|
|
}
|
|
pcmp->voices = params_channels(hw_params);
|
|
if (pcmp->pvoices[0] == NULL) {
|
|
if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
|
|
return -ENOMEM;
|
|
pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
|
|
pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
|
|
pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
|
|
pcmp->pvoices[0]->private_data = pcmp;
|
|
}
|
|
if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
|
|
if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
|
|
return -ENOMEM;
|
|
pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
|
|
pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
|
|
pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
|
|
pcmp->pvoices[1]->private_data = pcmp;
|
|
} else if (pcmp->voices == 1) {
|
|
if (pcmp->pvoices[1]) {
|
|
snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
|
|
pcmp->pvoices[1] = NULL;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_playback_hw_free(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
gus_pcm_private_t *pcmp = runtime->private_data;
|
|
|
|
snd_pcm_lib_free_pages(substream);
|
|
if (pcmp->pvoices[0]) {
|
|
snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
|
|
pcmp->pvoices[0] = NULL;
|
|
}
|
|
if (pcmp->pvoices[1]) {
|
|
snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
|
|
pcmp->pvoices[1] = NULL;
|
|
}
|
|
if (pcmp->memory > 0) {
|
|
snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
|
|
pcmp->memory = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_playback_prepare(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
gus_pcm_private_t *pcmp = runtime->private_data;
|
|
|
|
pcmp->bpos = 0;
|
|
pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
|
|
pcmp->block_size = snd_pcm_lib_period_bytes(substream);
|
|
pcmp->blocks = pcmp->dma_size / pcmp->block_size;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_playback_trigger(snd_pcm_substream_t * substream,
|
|
int cmd)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
gus_pcm_private_t *pcmp = runtime->private_data;
|
|
int voice;
|
|
|
|
if (cmd == SNDRV_PCM_TRIGGER_START) {
|
|
snd_gf1_pcm_trigger_up(substream);
|
|
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
|
|
spin_lock(&pcmp->lock);
|
|
pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
|
|
spin_unlock(&pcmp->lock);
|
|
voice = pcmp->pvoices[0]->number;
|
|
snd_gf1_stop_voices(gus, voice, voice);
|
|
if (pcmp->pvoices[1]) {
|
|
voice = pcmp->pvoices[1]->number;
|
|
snd_gf1_stop_voices(gus, voice, voice);
|
|
}
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
gus_pcm_private_t *pcmp = runtime->private_data;
|
|
unsigned int pos;
|
|
unsigned char voice_ctrl;
|
|
|
|
pos = 0;
|
|
spin_lock(&gus->reg_lock);
|
|
if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
|
|
snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
|
|
voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
|
|
pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
|
|
if (substream->runtime->channels > 1)
|
|
pos <<= 1;
|
|
pos = bytes_to_frames(runtime, pos);
|
|
}
|
|
spin_unlock(&gus->reg_lock);
|
|
return pos;
|
|
}
|
|
|
|
static ratnum_t clock = {
|
|
.num = 9878400/16,
|
|
.den_min = 2,
|
|
.den_max = 257,
|
|
.den_step = 1,
|
|
};
|
|
|
|
static snd_pcm_hw_constraint_ratnums_t hw_constraints_clocks = {
|
|
.nrats = 1,
|
|
.rats = &clock,
|
|
};
|
|
|
|
static int snd_gf1_pcm_capture_hw_params(snd_pcm_substream_t * substream,
|
|
snd_pcm_hw_params_t * hw_params)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
|
|
gus->c_dma_size = params_buffer_bytes(hw_params);
|
|
gus->c_period_size = params_period_bytes(hw_params);
|
|
gus->c_pos = 0;
|
|
gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
|
|
if (params_channels(hw_params) > 1)
|
|
gus->gf1.pcm_rcntrl_reg |= 2;
|
|
if (gus->gf1.dma2 > 3)
|
|
gus->gf1.pcm_rcntrl_reg |= 4;
|
|
if (snd_pcm_format_unsigned(params_format(hw_params)))
|
|
gus->gf1.pcm_rcntrl_reg |= 0x80;
|
|
return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
|
|
}
|
|
|
|
static int snd_gf1_pcm_capture_hw_free(snd_pcm_substream_t * substream)
|
|
{
|
|
return snd_pcm_lib_free_pages(substream);
|
|
}
|
|
|
|
static int snd_gf1_pcm_capture_prepare(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
|
|
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
|
|
snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
|
|
snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
|
|
snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_capture_trigger(snd_pcm_substream_t * substream,
|
|
int cmd)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
int val;
|
|
|
|
if (cmd == SNDRV_PCM_TRIGGER_START) {
|
|
val = gus->gf1.pcm_rcntrl_reg;
|
|
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
|
|
val = 0;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock(&gus->reg_lock);
|
|
snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
|
|
snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
|
|
spin_unlock(&gus->reg_lock);
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
|
|
pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
|
|
return pos;
|
|
}
|
|
|
|
static void snd_gf1_pcm_interrupt_dma_read(snd_gus_card_t * gus)
|
|
{
|
|
snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
|
|
snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
|
|
if (gus->pcm_cap_substream != NULL) {
|
|
snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
|
|
snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
|
|
gus->c_pos += gus->c_period_size;
|
|
snd_pcm_period_elapsed(gus->pcm_cap_substream);
|
|
}
|
|
}
|
|
|
|
static snd_pcm_hardware_t snd_gf1_pcm_playback =
|
|
{
|
|
.info = SNDRV_PCM_INFO_NONINTERLEAVED,
|
|
.formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
|
|
.rate_min = 5510,
|
|
.rate_max = 48000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (128*1024),
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = (128*1024),
|
|
.periods_min = 1,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
static snd_pcm_hardware_t snd_gf1_pcm_capture =
|
|
{
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_MMAP_VALID),
|
|
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
|
|
.rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
|
|
.rate_min = 5510,
|
|
.rate_max = 44100,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (128*1024),
|
|
.period_bytes_min = 64,
|
|
.period_bytes_max = (128*1024),
|
|
.periods_min = 1,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
static void snd_gf1_pcm_playback_free(snd_pcm_runtime_t *runtime)
|
|
{
|
|
kfree(runtime->private_data);
|
|
}
|
|
|
|
static int snd_gf1_pcm_playback_open(snd_pcm_substream_t *substream)
|
|
{
|
|
gus_pcm_private_t *pcmp;
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
int err;
|
|
|
|
pcmp = kcalloc(1, sizeof(*pcmp), GFP_KERNEL);
|
|
if (pcmp == NULL)
|
|
return -ENOMEM;
|
|
pcmp->gus = gus;
|
|
spin_lock_init(&pcmp->lock);
|
|
init_waitqueue_head(&pcmp->sleep);
|
|
atomic_set(&pcmp->dma_count, 0);
|
|
|
|
runtime->private_data = pcmp;
|
|
runtime->private_free = snd_gf1_pcm_playback_free;
|
|
|
|
#if 0
|
|
printk("playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
|
|
#endif
|
|
if ((err = snd_gf1_dma_init(gus)) < 0)
|
|
return err;
|
|
pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
|
|
pcmp->substream = substream;
|
|
runtime->hw = snd_gf1_pcm_playback;
|
|
snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
|
|
snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
|
|
snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_playback_close(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
gus_pcm_private_t *pcmp = runtime->private_data;
|
|
|
|
if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
|
|
snd_printk("gf1 pcm - serious DMA problem\n");
|
|
|
|
snd_gf1_dma_done(gus);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_capture_open(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_pcm_runtime_t *runtime = substream->runtime;
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
|
|
gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
|
|
gus->pcm_cap_substream = substream;
|
|
substream->runtime->hw = snd_gf1_pcm_capture;
|
|
snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
|
|
snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
|
|
snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
|
|
&hw_constraints_clocks);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_capture_close(snd_pcm_substream_t * substream)
|
|
{
|
|
snd_gus_card_t *gus = snd_pcm_substream_chip(substream);
|
|
|
|
gus->pcm_cap_substream = NULL;
|
|
snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
|
|
return 0;
|
|
}
|
|
|
|
static void snd_gf1_pcm_free(snd_pcm_t *pcm)
|
|
{
|
|
snd_gus_card_t *gus = pcm->private_data;
|
|
gus->pcm = NULL;
|
|
snd_pcm_lib_preallocate_free_for_all(pcm);
|
|
}
|
|
|
|
static int snd_gf1_pcm_volume_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
|
|
{
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
|
uinfo->count = 2;
|
|
uinfo->value.integer.min = 0;
|
|
uinfo->value.integer.max = 127;
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_volume_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
|
|
{
|
|
snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
|
|
ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
|
|
ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
|
|
spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_gf1_pcm_volume_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
|
|
{
|
|
snd_gus_card_t *gus = snd_kcontrol_chip(kcontrol);
|
|
unsigned long flags;
|
|
int change;
|
|
unsigned int idx;
|
|
unsigned short val1, val2, vol;
|
|
gus_pcm_private_t *pcmp;
|
|
snd_gus_voice_t *pvoice;
|
|
|
|
val1 = ucontrol->value.integer.value[0] & 127;
|
|
val2 = ucontrol->value.integer.value[1] & 127;
|
|
spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
|
|
change = val1 != gus->gf1.pcm_volume_level_left1 ||
|
|
val2 != gus->gf1.pcm_volume_level_right1;
|
|
gus->gf1.pcm_volume_level_left1 = val1;
|
|
gus->gf1.pcm_volume_level_right1 = val2;
|
|
gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
|
|
gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
|
|
spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
|
|
/* are we active? */
|
|
spin_lock_irqsave(&gus->voice_alloc, flags);
|
|
for (idx = 0; idx < 32; idx++) {
|
|
pvoice = &gus->gf1.voices[idx];
|
|
if (!pvoice->pcm)
|
|
continue;
|
|
pcmp = pvoice->private_data;
|
|
if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
|
|
continue;
|
|
/* load real volume - better precision */
|
|
spin_lock_irqsave(&gus->reg_lock, flags);
|
|
snd_gf1_select_voice(gus, pvoice->number);
|
|
snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
|
|
vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
|
|
snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
|
|
pcmp->final_volume = 1;
|
|
spin_unlock_irqrestore(&gus->reg_lock, flags);
|
|
}
|
|
spin_unlock_irqrestore(&gus->voice_alloc, flags);
|
|
return change;
|
|
}
|
|
|
|
static snd_kcontrol_new_t snd_gf1_pcm_volume_control =
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "PCM Playback Volume",
|
|
.info = snd_gf1_pcm_volume_info,
|
|
.get = snd_gf1_pcm_volume_get,
|
|
.put = snd_gf1_pcm_volume_put
|
|
};
|
|
|
|
static snd_kcontrol_new_t snd_gf1_pcm_volume_control1 =
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "GPCM Playback Volume",
|
|
.info = snd_gf1_pcm_volume_info,
|
|
.get = snd_gf1_pcm_volume_get,
|
|
.put = snd_gf1_pcm_volume_put
|
|
};
|
|
|
|
static snd_pcm_ops_t snd_gf1_pcm_playback_ops = {
|
|
.open = snd_gf1_pcm_playback_open,
|
|
.close = snd_gf1_pcm_playback_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_gf1_pcm_playback_hw_params,
|
|
.hw_free = snd_gf1_pcm_playback_hw_free,
|
|
.prepare = snd_gf1_pcm_playback_prepare,
|
|
.trigger = snd_gf1_pcm_playback_trigger,
|
|
.pointer = snd_gf1_pcm_playback_pointer,
|
|
.copy = snd_gf1_pcm_playback_copy,
|
|
.silence = snd_gf1_pcm_playback_silence,
|
|
};
|
|
|
|
static snd_pcm_ops_t snd_gf1_pcm_capture_ops = {
|
|
.open = snd_gf1_pcm_capture_open,
|
|
.close = snd_gf1_pcm_capture_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = snd_gf1_pcm_capture_hw_params,
|
|
.hw_free = snd_gf1_pcm_capture_hw_free,
|
|
.prepare = snd_gf1_pcm_capture_prepare,
|
|
.trigger = snd_gf1_pcm_capture_trigger,
|
|
.pointer = snd_gf1_pcm_capture_pointer,
|
|
};
|
|
|
|
int snd_gf1_pcm_new(snd_gus_card_t * gus, int pcm_dev, int control_index, snd_pcm_t ** rpcm)
|
|
{
|
|
snd_card_t *card;
|
|
snd_kcontrol_t *kctl;
|
|
snd_pcm_t *pcm;
|
|
snd_pcm_substream_t *substream;
|
|
int capture, err;
|
|
|
|
if (rpcm)
|
|
*rpcm = NULL;
|
|
card = gus->card;
|
|
capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
|
|
err = snd_pcm_new(card,
|
|
gus->interwave ? "AMD InterWave" : "GF1",
|
|
pcm_dev,
|
|
gus->gf1.pcm_channels / 2,
|
|
capture,
|
|
&pcm);
|
|
if (err < 0)
|
|
return err;
|
|
pcm->private_data = gus;
|
|
pcm->private_free = snd_gf1_pcm_free;
|
|
/* playback setup */
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
|
|
|
|
for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
|
|
snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
|
|
snd_dma_isa_data(),
|
|
64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
|
|
|
|
pcm->info_flags = 0;
|
|
pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
|
|
if (capture) {
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
|
|
if (gus->gf1.dma2 == gus->gf1.dma1)
|
|
pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
|
|
snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
|
|
SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
|
|
64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
|
|
}
|
|
strcpy(pcm->name, pcm->id);
|
|
if (gus->interwave) {
|
|
sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
|
|
}
|
|
strcat(pcm->name, " (synth)");
|
|
gus->pcm = pcm;
|
|
|
|
if (gus->codec_flag)
|
|
kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
|
|
else
|
|
kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
|
|
if ((err = snd_ctl_add(card, kctl)) < 0)
|
|
return err;
|
|
kctl->id.index = control_index;
|
|
|
|
if (rpcm)
|
|
*rpcm = pcm;
|
|
return 0;
|
|
}
|
|
|