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/*
* drivers/sound/vidc.c
*
* Detection routine for the VIDC.
*
* Copyright (C) 1997 by Russell King <rmk@arm.uk.linux.org>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <asm/dma.h>
#include "sound_config.h"
#include "soundmodule.h"
#include "vidc.h"
int vidc_busy;
void vidc_update_filler(int format, int channels)
{
int fillertype;
#define TYPE(fmt,ch) (((fmt)<<2) | ((ch)&3))
fillertype = TYPE(format, channels);
switch (fillertype)
{
default:
case TYPE(AFMT_U8, 1):
vidc_filler = vidc_fill_1x8_u;
break;
case TYPE(AFMT_U8, 2):
vidc_filler = vidc_fill_2x8_u;
break;
case TYPE(AFMT_S8, 1):
vidc_filler = vidc_fill_1x8_s;
break;
case TYPE(AFMT_S8, 2):
vidc_filler = vidc_fill_2x8_s;
break;
case TYPE(AFMT_S16_LE, 1):
vidc_filler = vidc_fill_1x16_s;
break;
case TYPE(AFMT_S16_LE, 2):
vidc_filler = vidc_fill_2x16_s;
break;
}
}
void attach_vidc(struct address_info *hw_config)
{
char name[32];
int i;
sprintf(name, "VIDC %d-bit sound", hw_config->card_subtype);
conf_printf(name, hw_config);
memset(dma_buf, 0, sizeof(dma_buf));
for (i = 0; i < 2; i++)
{
dma_buf[i] = get_free_page(GFP_KERNEL);
if (!dma_buf[i])
goto nomem;
dma_pbuf[i] = virt_to_phys(dma_buf[i]);
}
if (sound_alloc_dma(hw_config->dma, "VIDCsound"))
{
printk(KERN_ERR "VIDCsound: can't allocate virtual DMA channel\n");
return;
}
if (request_irq(hw_config->irq, vidc_sound_dma_irq, 0, "VIDCsound", &dma_start))
{
printk(KERN_ERR "VIDCsound: can't allocate DMA interrupt\n");
return;
}
// vidc_synth_init(hw_config);
vidc_audio_init(hw_config);
vidc_mixer_init(hw_config);
return;
nomem:
for (i = 0; i < 2; i++)
free_page(dma_buf[i]);
printk(KERN_ERR "VIDCsound: can't allocate required buffers\n");
}
int probe_vidc(struct address_info *hw_config)
{
hw_config->irq = IRQ_DMAS0;
hw_config->dma = DMA_VIRTUAL_SOUND;
hw_config->dma2 = -1;
hw_config->card_subtype = 16;
return 1;
}
void unload_vidc(struct address_info *hw_config)
{
int i;
free_irq(hw_config->irq, NULL);
sound_free_dma(hw_config->dma);
for (i = 0; i < 2; i++)
free_page(dma_buf[i]);
}
#ifdef MODULE
static struct address_info config;
int init_module(void)
{
if (probe_vidc(&config) == 0)
return -ENODEV;
printk("VIDC 16-bit serial sound\n");
SOUND_LOCK;
attach_vidc(&config);
return 0;
}
void cleanup_module(void)
{
unload_vidc(&config);
SOUND_LOCK_END;
}
#endif
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