276 lines
6.5 KiB
C
276 lines
6.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Driver for Sound Core PDAudioCF soundcards
|
|
*
|
|
* PCM part
|
|
*
|
|
* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <sound/core.h>
|
|
#include <sound/asoundef.h>
|
|
#include "pdaudiocf.h"
|
|
|
|
|
|
/*
|
|
* clear the SRAM contents
|
|
*/
|
|
static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
|
|
{
|
|
int max_loop = 64 * 1024;
|
|
|
|
while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
|
|
if (max_loop-- < 0)
|
|
return -EIO;
|
|
inw(chip->port + PDAUDIOCF_REG_MD);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* pdacf_pcm_trigger - trigger callback for capture
|
|
*/
|
|
static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
|
|
{
|
|
struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
|
|
struct snd_pcm_runtime *runtime = subs->runtime;
|
|
int inc, ret = 0, rate;
|
|
unsigned short mask, val, tmp;
|
|
|
|
if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
|
|
return -EBUSY;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
chip->pcm_hwptr = 0;
|
|
chip->pcm_tdone = 0;
|
|
fallthrough;
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
mask = 0;
|
|
val = PDAUDIOCF_RECORD;
|
|
inc = 1;
|
|
rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
mask = PDAUDIOCF_RECORD;
|
|
val = 0;
|
|
inc = -1;
|
|
rate = 0;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
mutex_lock(&chip->reg_lock);
|
|
chip->pcm_running += inc;
|
|
tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
if (chip->pcm_running) {
|
|
if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
|
|
chip->pcm_running -= inc;
|
|
ret = -EIO;
|
|
goto __end;
|
|
}
|
|
}
|
|
tmp &= ~mask;
|
|
tmp |= val;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
|
|
__end:
|
|
mutex_unlock(&chip->reg_lock);
|
|
snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* pdacf_pcm_prepare - prepare callback for playback and capture
|
|
*/
|
|
static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
|
|
{
|
|
struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
|
|
struct snd_pcm_runtime *runtime = subs->runtime;
|
|
u16 val, nval, aval;
|
|
|
|
if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
|
|
return -EBUSY;
|
|
|
|
chip->pcm_channels = runtime->channels;
|
|
|
|
chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
|
|
#ifdef SNDRV_LITTLE_ENDIAN
|
|
chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
|
|
#else
|
|
chip->pcm_swab = chip->pcm_little;
|
|
#endif
|
|
|
|
if (snd_pcm_format_unsigned(runtime->format))
|
|
chip->pcm_xor = 0x80008000;
|
|
|
|
if (pdacf_pcm_clear_sram(chip) < 0)
|
|
return -EIO;
|
|
|
|
val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
|
|
nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
|
|
switch (runtime->format) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
case SNDRV_PCM_FORMAT_S16_BE:
|
|
break;
|
|
default: /* 24-bit */
|
|
nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
|
|
break;
|
|
}
|
|
aval = 0;
|
|
chip->pcm_sample = 4;
|
|
switch (runtime->format) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
case SNDRV_PCM_FORMAT_S16_BE:
|
|
aval = AK4117_DIF_16R;
|
|
chip->pcm_frame = 2;
|
|
chip->pcm_sample = 2;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_3LE:
|
|
case SNDRV_PCM_FORMAT_S24_3BE:
|
|
chip->pcm_sample = 3;
|
|
fallthrough;
|
|
default: /* 24-bit */
|
|
aval = AK4117_DIF_24R;
|
|
chip->pcm_frame = 3;
|
|
chip->pcm_xor &= 0xffff0000;
|
|
break;
|
|
}
|
|
|
|
if (val != nval) {
|
|
snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
|
|
}
|
|
|
|
val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
|
|
val &= ~(PDAUDIOCF_IRQLVLEN1);
|
|
val |= PDAUDIOCF_IRQLVLEN0;
|
|
pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
|
|
|
|
chip->pcm_size = runtime->buffer_size;
|
|
chip->pcm_period = runtime->period_size;
|
|
chip->pcm_area = runtime->dma_area;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* capture hw information
|
|
*/
|
|
|
|
static const struct snd_pcm_hardware pdacf_pcm_capture_hw = {
|
|
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_BATCH),
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
|
|
SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
|
|
SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
|
|
.rates = SNDRV_PCM_RATE_32000 |
|
|
SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_88200 |
|
|
SNDRV_PCM_RATE_96000 |
|
|
SNDRV_PCM_RATE_176400 |
|
|
SNDRV_PCM_RATE_192000,
|
|
.rate_min = 32000,
|
|
.rate_max = 192000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (512*1024),
|
|
.period_bytes_min = 8*1024,
|
|
.period_bytes_max = (64*1024),
|
|
.periods_min = 2,
|
|
.periods_max = 128,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
|
|
/*
|
|
* pdacf_pcm_capture_open - open callback for capture
|
|
*/
|
|
static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
|
|
{
|
|
struct snd_pcm_runtime *runtime = subs->runtime;
|
|
struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
|
|
|
|
if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
|
|
return -EBUSY;
|
|
|
|
runtime->hw = pdacf_pcm_capture_hw;
|
|
runtime->private_data = chip;
|
|
chip->pcm_substream = subs;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* pdacf_pcm_capture_close - close callback for capture
|
|
*/
|
|
static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
|
|
{
|
|
struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
|
|
|
|
if (!chip)
|
|
return -EINVAL;
|
|
pdacf_reinit(chip, 0);
|
|
chip->pcm_substream = NULL;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* pdacf_pcm_capture_pointer - pointer callback for capture
|
|
*/
|
|
static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
|
|
{
|
|
struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
|
|
return chip->pcm_hwptr;
|
|
}
|
|
|
|
/*
|
|
* operators for PCM capture
|
|
*/
|
|
static const struct snd_pcm_ops pdacf_pcm_capture_ops = {
|
|
.open = pdacf_pcm_capture_open,
|
|
.close = pdacf_pcm_capture_close,
|
|
.prepare = pdacf_pcm_prepare,
|
|
.trigger = pdacf_pcm_trigger,
|
|
.pointer = pdacf_pcm_capture_pointer,
|
|
};
|
|
|
|
|
|
/*
|
|
* snd_pdacf_pcm_new - create and initialize a pcm
|
|
*/
|
|
int snd_pdacf_pcm_new(struct snd_pdacf *chip)
|
|
{
|
|
struct snd_pcm *pcm;
|
|
int err;
|
|
|
|
err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
|
|
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
|
|
snd_dma_continuous_data(GFP_KERNEL | GFP_DMA32),
|
|
0, 0);
|
|
|
|
pcm->private_data = chip;
|
|
pcm->info_flags = 0;
|
|
pcm->nonatomic = true;
|
|
strcpy(pcm->name, chip->card->shortname);
|
|
chip->pcm = pcm;
|
|
|
|
err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|