/* * Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h> #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("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("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("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("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("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); snd_assert(bpos <= pcmp->dma_size, return -EIO); snd_assert(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); snd_assert(bpos <= pcmp->dma_size, return -EIO); snd_assert(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("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_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 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_pcm ** rpcm) { struct snd_card *card; struct snd_kcontrol *kctl; struct snd_pcm *pcm; struct snd_pcm_substream *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; /* 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; }