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902 lines
28 KiB
902 lines
28 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) by Jaroslav Kysela <[email protected]> |
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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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#include <asm/dma.h> |
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#include <linux/slab.h> |
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#include <linux/sched/signal.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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struct gus_pcm_private { |
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struct snd_gus_card * gus; |
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struct snd_pcm_substream *substream; |
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spinlock_t lock; |
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unsigned int voices; |
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struct snd_gus_voice *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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}; |
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static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data) |
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{ |
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struct gus_pcm_private *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(struct snd_pcm_substream *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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struct snd_gf1_dma_block block; |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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count += offset & 31; |
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offset &= ~31; |
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/* |
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snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n", |
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offset, count); |
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*/ |
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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(struct snd_pcm_substream *substream) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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struct snd_gus_card * 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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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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/* |
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snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, " |
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"ctrl=0x%x, ramp=0x%x, rate=0x%x\n", |
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curr, begin, end, voice_ctrl, ramp_ctrl, rate); |
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*/ |
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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(struct snd_gus_card * gus, |
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struct snd_gus_voice *pvoice) |
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{ |
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struct gus_pcm_private * pcmp; |
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struct snd_pcm_runtime *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(KERN_DEBUG "position = 0x%x\n", |
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(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(KERN_DEBUG "position = 0x%x\n", |
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(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(struct snd_gus_card * gus, |
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struct snd_gus_voice * pvoice) |
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{ |
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unsigned short vol; |
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int cvoice; |
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struct gus_pcm_private *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(struct snd_gus_card * gus) |
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{ |
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} |
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static int snd_gf1_pcm_poke_block(struct snd_gus_card *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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/* |
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printk(KERN_DEBUG |
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"poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", |
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(int)buf, pos, count, gus->gf1.port); |
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*/ |
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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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schedule_timeout_interruptible(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 get_bpos(struct gus_pcm_private *pcmp, int voice, unsigned int pos, |
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unsigned int len) |
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{ |
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unsigned int bpos = pos + (voice * (pcmp->dma_size / 2)); |
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if (snd_BUG_ON(bpos > pcmp->dma_size)) |
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return -EIO; |
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if (snd_BUG_ON(bpos + len > pcmp->dma_size)) |
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return -EIO; |
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return bpos; |
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} |
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static int playback_copy_ack(struct snd_pcm_substream *substream, |
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unsigned int bpos, unsigned int len) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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struct snd_gus_card *gus = pcmp->gus; |
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int w16, invert; |
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if (len > 32) |
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return snd_gf1_pcm_block_change(substream, bpos, |
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pcmp->memory + bpos, len); |
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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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return snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, |
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pcmp->memory + bpos, len, w16, invert); |
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} |
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static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, |
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int voice, unsigned long pos, |
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void __user *src, unsigned long count) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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unsigned int len = count; |
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int bpos; |
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bpos = get_bpos(pcmp, voice, pos, len); |
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if (bpos < 0) |
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return pos; |
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if (copy_from_user(runtime->dma_area + bpos, src, len)) |
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return -EFAULT; |
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return playback_copy_ack(substream, bpos, len); |
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} |
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static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream, |
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int voice, unsigned long pos, |
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void *src, unsigned long count) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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unsigned int len = count; |
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int bpos; |
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bpos = get_bpos(pcmp, voice, pos, len); |
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if (bpos < 0) |
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return pos; |
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memcpy(runtime->dma_area + bpos, src, len); |
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return playback_copy_ack(substream, bpos, len); |
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} |
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static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, |
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int voice, unsigned long pos, |
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unsigned long count) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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unsigned int len = count; |
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int bpos; |
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bpos = get_bpos(pcmp, voice, pos, len); |
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if (bpos < 0) |
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return pos; |
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snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, |
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bytes_to_samples(runtime, count)); |
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return playback_copy_ack(substream, bpos, len); |
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} |
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static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *hw_params) |
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{ |
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struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
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struct snd_pcm_runtime *runtime = substream->runtime; |
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struct gus_pcm_private *pcmp = runtime->private_data; |
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|
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if (runtime->buffer_changed) { |
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struct snd_gf1_mem_block *block; |
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if (pcmp->memory > 0) { |
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snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory); |
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pcmp->memory = 0; |
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} |
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block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc, |
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SNDRV_GF1_MEM_OWNER_DRIVER, |
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"GF1 PCM", |
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runtime->dma_bytes, 1, 32, |
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NULL); |
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if (!block) |
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return -ENOMEM; |
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pcmp->memory = block->ptr; |
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} |
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pcmp->voices = params_channels(hw_params); |
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if (pcmp->pvoices[0] == NULL) { |
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pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); |
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if (!pcmp->pvoices[0]) |
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return -ENOMEM; |
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pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave; |
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pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume; |
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pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change; |
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pcmp->pvoices[0]->private_data = pcmp; |
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} |
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if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) { |
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pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0); |
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if (!pcmp->pvoices[1]) |
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return -ENOMEM; |
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pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave; |
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pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume; |
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pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change; |
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pcmp->pvoices[1]->private_data = pcmp; |
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} else if (pcmp->voices == 1) { |
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if (pcmp->pvoices[1]) { |
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snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]); |
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pcmp->pvoices[1] = NULL; |
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} |
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} |
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return 0; |
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} |
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|
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static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream) |
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{ |
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struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct gus_pcm_private *pcmp = runtime->private_data; |
|
|
|
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(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct gus_pcm_private *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(struct snd_pcm_substream *substream, |
|
int cmd) |
|
{ |
|
struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct gus_pcm_private *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(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct gus_pcm_private *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 const struct snd_ratnum clock = { |
|
.num = 9878400/16, |
|
.den_min = 2, |
|
.den_max = 257, |
|
.den_step = 1, |
|
}; |
|
|
|
static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = { |
|
.nrats = 1, |
|
.rats = &clock, |
|
}; |
|
|
|
static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream, |
|
struct snd_pcm_hw_params *hw_params) |
|
{ |
|
struct snd_gus_card *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 0; |
|
} |
|
|
|
static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *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(struct snd_pcm_substream *substream, |
|
int cmd) |
|
{ |
|
struct snd_gus_card *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(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_gus_card *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(struct snd_gus_card * 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 const struct snd_pcm_hardware 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 const struct snd_pcm_hardware 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(struct snd_pcm_runtime *runtime) |
|
{ |
|
kfree(runtime->private_data); |
|
} |
|
|
|
static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream) |
|
{ |
|
struct gus_pcm_private *pcmp; |
|
struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
int err; |
|
|
|
pcmp = kzalloc(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(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n", |
|
(long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer); |
|
#endif |
|
err = snd_gf1_dma_init(gus); |
|
if (err < 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(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_gus_card *gus = snd_pcm_substream_chip(substream); |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct gus_pcm_private *pcmp = runtime->private_data; |
|
|
|
if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ)) |
|
snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n"); |
|
|
|
snd_gf1_dma_done(gus); |
|
return 0; |
|
} |
|
|
|
static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_pcm_runtime *runtime = substream->runtime; |
|
struct snd_gus_card *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(struct snd_pcm_substream *substream) |
|
{ |
|
struct snd_gus_card *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 int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct snd_gus_card *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(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) |
|
{ |
|
struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol); |
|
unsigned long flags; |
|
int change; |
|
unsigned int idx; |
|
unsigned short val1, val2, vol; |
|
struct gus_pcm_private *pcmp; |
|
struct snd_gus_voice *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(&gus->reg_lock); |
|
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(&gus->reg_lock); |
|
} |
|
spin_unlock_irqrestore(&gus->voice_alloc, flags); |
|
return change; |
|
} |
|
|
|
static const struct snd_kcontrol_new 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 const struct snd_kcontrol_new 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 const struct snd_pcm_ops snd_gf1_pcm_playback_ops = { |
|
.open = snd_gf1_pcm_playback_open, |
|
.close = snd_gf1_pcm_playback_close, |
|
.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_user = snd_gf1_pcm_playback_copy, |
|
.copy_kernel = snd_gf1_pcm_playback_copy_kernel, |
|
.fill_silence = snd_gf1_pcm_playback_silence, |
|
}; |
|
|
|
static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = { |
|
.open = snd_gf1_pcm_capture_open, |
|
.close = snd_gf1_pcm_capture_close, |
|
.hw_params = snd_gf1_pcm_capture_hw_params, |
|
.prepare = snd_gf1_pcm_capture_prepare, |
|
.trigger = snd_gf1_pcm_capture_trigger, |
|
.pointer = snd_gf1_pcm_capture_pointer, |
|
}; |
|
|
|
int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index) |
|
{ |
|
struct snd_card *card; |
|
struct snd_kcontrol *kctl; |
|
struct snd_pcm *pcm; |
|
struct snd_pcm_substream *substream; |
|
int capture, err; |
|
|
|
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; |
|
/* 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_set_managed_buffer(substream, SNDRV_DMA_TYPE_DEV, |
|
card->dev, |
|
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_set_managed_buffer(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream, |
|
SNDRV_DMA_TYPE_DEV, card->dev, |
|
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); |
|
err = snd_ctl_add(card, kctl); |
|
if (err < 0) |
|
return err; |
|
kctl->id.index = control_index; |
|
|
|
return 0; |
|
} |
|
|
|
|