diff options
Diffstat (limited to 'kernel/sound/isa/gus/gus_pcm.c')
| -rw-r--r-- | kernel/sound/isa/gus/gus_pcm.c | 906 |
1 files changed, 906 insertions, 0 deletions
diff --git a/kernel/sound/isa/gus/gus_pcm.c b/kernel/sound/isa/gus/gus_pcm.c new file mode 100644 index 000000000..25f6788cc --- /dev/null +++ b/kernel/sound/isa/gus/gus_pcm.c @@ -0,0 +1,906 @@ +/* + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * Routines for control of GF1 chip (PCM things) + * + * InterWave chips supports interleaved DMA, but this feature isn't used in + * this code. + * + * This code emulates autoinit DMA transfer for playback, recording by GF1 + * chip doesn't support autoinit DMA. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <asm/dma.h> +#include <linux/slab.h> +#include <sound/core.h> +#include <sound/control.h> +#include <sound/gus.h> +#include <sound/pcm_params.h> +#include "gus_tables.h" + +/* maximum rate */ + +#define SNDRV_GF1_PCM_RATE 48000 + +#define SNDRV_GF1_PCM_PFLG_NONE 0 +#define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0) +#define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0) + +struct gus_pcm_private { + struct snd_gus_card * gus; + struct snd_pcm_substream *substream; + spinlock_t lock; + unsigned int voices; + struct snd_gus_voice *pvoices[2]; + unsigned int memory; + unsigned short flags; + unsigned char voice_ctrl, ramp_ctrl; + unsigned int bpos; + unsigned int blocks; + unsigned int block_size; + unsigned int dma_size; + wait_queue_head_t sleep; + atomic_t dma_count; + int final_volume; +}; + +static int snd_gf1_pcm_use_dma = 1; + +static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data) +{ + struct gus_pcm_private *pcmp = private_data; + + if (pcmp) { + atomic_dec(&pcmp->dma_count); + wake_up(&pcmp->sleep); + } +} + +static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream, + unsigned int offset, + unsigned int addr, + unsigned int count) +{ + struct snd_gf1_dma_block block; + struct snd_pcm_runtime *runtime = substream->runtime; + struct gus_pcm_private *pcmp = runtime->private_data; + + count += offset & 31; + offset &= ~31; + /* + snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n", + offset, count); + */ + memset(&block, 0, sizeof(block)); + block.cmd = SNDRV_GF1_DMA_IRQ; + if (snd_pcm_format_unsigned(runtime->format)) + block.cmd |= SNDRV_GF1_DMA_UNSIGNED; + if (snd_pcm_format_width(runtime->format) == 16) + block.cmd |= SNDRV_GF1_DMA_16BIT; + block.addr = addr & ~31; + block.buffer = runtime->dma_area + offset; + block.buf_addr = runtime->dma_addr + offset; + block.count = count; + block.private_data = pcmp; + block.ack = snd_gf1_pcm_block_change_ack; + if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0)) + atomic_inc(&pcmp->dma_count); + return 0; +} + +static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct gus_pcm_private *pcmp = runtime->private_data; + struct snd_gus_card * gus = pcmp->gus; + unsigned long flags; + unsigned char voice_ctrl, ramp_ctrl; + unsigned short rate; + unsigned int curr, begin, end; + unsigned short vol; + unsigned char pan; + unsigned int voice; + + spin_lock_irqsave(&pcmp->lock, flags); + if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) { + spin_unlock_irqrestore(&pcmp->lock, flags); + return; + } + pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE; + pcmp->final_volume = 0; + spin_unlock_irqrestore(&pcmp->lock, flags); + rate = snd_gf1_translate_freq(gus, runtime->rate << 4); + /* enable WAVE IRQ */ + voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20; + /* enable RAMP IRQ + rollover */ + ramp_ctrl = 0x24; + if (pcmp->blocks == 1) { + voice_ctrl |= 0x08; /* loop enable */ + ramp_ctrl &= ~0x04; /* disable rollover */ + } + for (voice = 0; voice < pcmp->voices; voice++) { + begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels); + curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels; + end = curr + (pcmp->block_size / runtime->channels); + end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1; + /* + snd_printk(KERN_DEBUG "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); + */ + pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8; + vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; + spin_lock_irqsave(&gus->reg_lock, flags); + snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); + snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan); + snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate); + snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4); + snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); + snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4); + snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); + if (!gus->gf1.enh_mode) { + snd_gf1_delay(gus); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); + } + spin_unlock_irqrestore(&gus->reg_lock, flags); + } + spin_lock_irqsave(&gus->reg_lock, flags); + for (voice = 0; voice < pcmp->voices; voice++) { + snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); + if (gus->gf1.enh_mode) + snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */ + snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); + voice_ctrl &= ~0x20; + } + voice_ctrl |= 0x20; + if (!gus->gf1.enh_mode) { + snd_gf1_delay(gus); + for (voice = 0; voice < pcmp->voices; voice++) { + snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number); + snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); + voice_ctrl &= ~0x20; /* disable IRQ for next voice */ + } + } + spin_unlock_irqrestore(&gus->reg_lock, flags); +} + +static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus, + struct snd_gus_voice *pvoice) +{ + struct gus_pcm_private * pcmp; + struct snd_pcm_runtime *runtime; + unsigned char voice_ctrl, ramp_ctrl; + unsigned int idx; + unsigned int end, step; + + if (!pvoice->private_data) { + snd_printd("snd_gf1_pcm: unknown wave irq?\n"); + snd_gf1_smart_stop_voice(gus, pvoice->number); + return; + } + pcmp = pvoice->private_data; + if (pcmp == NULL) { + snd_printd("snd_gf1_pcm: unknown wave irq?\n"); + snd_gf1_smart_stop_voice(gus, pvoice->number); + return; + } + gus = pcmp->gus; + runtime = pcmp->substream->runtime; + + spin_lock(&gus->reg_lock); + snd_gf1_select_voice(gus, pvoice->number); + voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b; + ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03; +#if 0 + snd_gf1_select_voice(gus, pvoice->number); + printk(KERN_DEBUG "position = 0x%x\n", + (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); + snd_gf1_select_voice(gus, pcmp->pvoices[1]->number); + printk(KERN_DEBUG "position = 0x%x\n", + (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4)); + snd_gf1_select_voice(gus, pvoice->number); +#endif + pcmp->bpos++; + pcmp->bpos %= pcmp->blocks; + if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */ + voice_ctrl |= 0x08; /* enable loop */ + } else { + ramp_ctrl |= 0x04; /* enable rollover */ + } + end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels); + end -= voice_ctrl & 4 ? 2 : 1; + step = pcmp->dma_size / runtime->channels; + voice_ctrl |= 0x20; + if (!pcmp->final_volume) { + ramp_ctrl |= 0x20; + ramp_ctrl &= ~0x03; + } + for (idx = 0; idx < pcmp->voices; idx++, end += step) { + snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); + snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4); + snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); + voice_ctrl &= ~0x20; + } + if (!gus->gf1.enh_mode) { + snd_gf1_delay(gus); + voice_ctrl |= 0x20; + for (idx = 0; idx < pcmp->voices; idx++) { + snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number); + snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl); + snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl); + voice_ctrl &= ~0x20; + } + } + spin_unlock(&gus->reg_lock); + + snd_pcm_period_elapsed(pcmp->substream); +#if 0 + if ((runtime->flags & SNDRV_PCM_FLG_MMAP) && + *runtime->state == SNDRV_PCM_STATE_RUNNING) { + end = pcmp->bpos * pcmp->block_size; + if (runtime->channels > 1) { + snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2); + snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2); + } else { + snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size); + } + } +#endif +} + +static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus, + struct snd_gus_voice * pvoice) +{ + unsigned short vol; + int cvoice; + struct gus_pcm_private *pcmp = pvoice->private_data; + + /* stop ramp, but leave rollover bit untouched */ + spin_lock(&gus->reg_lock); + snd_gf1_select_voice(gus, pvoice->number); + snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); + spin_unlock(&gus->reg_lock); + if (pcmp == NULL) + return; + /* are we active? */ + if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE)) + return; + /* load real volume - better precision */ + cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1; + if (pcmp->substream == NULL) + return; + vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right; + spin_lock(&gus->reg_lock); + snd_gf1_select_voice(gus, pvoice->number); + snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol); + pcmp->final_volume = 1; + spin_unlock(&gus->reg_lock); +} + +static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus) +{ +} + +static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf, + unsigned int pos, unsigned int count, + int w16, int invert) +{ + unsigned int len; + unsigned long flags; + + /* + printk(KERN_DEBUG + "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n", + (int)buf, pos, count, gus->gf1.port); + */ + while (count > 0) { + len = count; + if (len > 512) /* limit, to allow IRQ */ + len = 512; + count -= len; + if (gus->interwave) { + spin_lock_irqsave(&gus->reg_lock, flags); + snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00)); + snd_gf1_dram_addr(gus, pos); + if (w16) { + outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL)); + outsw(GUSP(gus, GF1DATALOW), buf, len >> 1); + } else { + outsb(GUSP(gus, DRAM), buf, len); + } + spin_unlock_irqrestore(&gus->reg_lock, flags); + buf += 512; + pos += 512; + } else { + invert = invert ? 0x80 : 0x00; + if (w16) { + len >>= 1; + while (len--) { + snd_gf1_poke(gus, pos++, *buf++); + snd_gf1_poke(gus, pos++, *buf++ ^ invert); + } + } else { + while (len--) + snd_gf1_poke(gus, pos++, *buf++ ^ invert); + } + } + if (count > 0 && !in_interrupt()) { + schedule_timeout_interruptible(1); + if (signal_pending(current)) + return -EAGAIN; + } + } + return 0; +} + +static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream, + int voice, + snd_pcm_uframes_t pos, + void __user *src, + snd_pcm_uframes_t count) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct gus_pcm_private *pcmp = runtime->private_data; + unsigned int bpos, len; + + bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); + len = samples_to_bytes(runtime, count); + if (snd_BUG_ON(bpos > pcmp->dma_size)) + return -EIO; + if (snd_BUG_ON(bpos + len > pcmp->dma_size)) + return -EIO; + if (copy_from_user(runtime->dma_area + bpos, src, len)) + return -EFAULT; + if (snd_gf1_pcm_use_dma && len > 32) { + return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); + } else { + struct snd_gus_card *gus = pcmp->gus; + int err, w16, invert; + + w16 = (snd_pcm_format_width(runtime->format) == 16); + invert = snd_pcm_format_unsigned(runtime->format); + if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) + return err; + } + return 0; +} + +static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream, + int voice, + snd_pcm_uframes_t pos, + snd_pcm_uframes_t count) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct gus_pcm_private *pcmp = runtime->private_data; + unsigned int bpos, len; + + bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2)); + len = samples_to_bytes(runtime, count); + if (snd_BUG_ON(bpos > pcmp->dma_size)) + return -EIO; + if (snd_BUG_ON(bpos + len > pcmp->dma_size)) + return -EIO; + snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count); + if (snd_gf1_pcm_use_dma && len > 32) { + return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len); + } else { + struct snd_gus_card *gus = pcmp->gus; + int err, w16, invert; + + w16 = (snd_pcm_format_width(runtime->format) == 16); + invert = snd_pcm_format_unsigned(runtime->format); + if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0) + return err; + } + return 0; +} + +static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + 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 err; + + if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0) + return err; + if (err > 0) { /* change */ + struct snd_gf1_mem_block *block; + 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(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct gus_pcm_private *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(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 struct snd_ratnum clock = { + .num = 9878400/16, + .den_min = 2, + .den_max = 257, + .den_step = 1, +}; + +static 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 snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); +} + +static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream) +{ + return snd_pcm_lib_free_pages(substream); +} + +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 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 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 + 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(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 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 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 struct snd_pcm_ops 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 struct snd_pcm_ops 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(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_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; + + return 0; +} + |