mirror of https://gitee.com/openkylin/linux.git
ALSA: asihpi: MMAP for non-busmaster cards
Allow older non DMA capable cards to use MMAP by emulating the DMA using read and write functions, and getting rid of copy & silence callbacks that were used only by older cards. Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Eliot Blennerhassett
Takashi Iwai
parent
0b7ce9e2bd
commit
f3d145aac9
|
|
@ -42,6 +42,7 @@
|
|||
#include <sound/tlv.h>
|
||||
#include <sound/hwdep.h>
|
||||
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_AUTHOR("AudioScience inc. <support@audioscience.com>");
|
||||
MODULE_DESCRIPTION("AudioScience ALSA ASI5000 ASI6000 ASI87xx ASI89xx");
|
||||
|
|
@ -146,7 +147,7 @@ struct snd_card_asihpi {
|
|||
u32 h_mixer;
|
||||
struct clk_cache cc;
|
||||
|
||||
u16 support_mmap;
|
||||
u16 can_dma;
|
||||
u16 support_grouping;
|
||||
u16 support_mrx;
|
||||
u16 update_interval_frames;
|
||||
|
|
@ -491,8 +492,7 @@ static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
|
|||
}
|
||||
|
||||
dpcm->hpi_buffer_attached = 0;
|
||||
if (card->support_mmap) {
|
||||
|
||||
if (card->can_dma) {
|
||||
err = hpi_stream_host_buffer_attach(dpcm->h_stream,
|
||||
params_buffer_bytes(params), runtime->dma_addr);
|
||||
if (err == 0) {
|
||||
|
|
@ -594,8 +594,7 @@ static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream,
|
|||
continue;
|
||||
|
||||
ds->drained_count = 0;
|
||||
if ((s->stream == SNDRV_PCM_STREAM_PLAYBACK) &&
|
||||
(card->support_mmap)) {
|
||||
if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
/* How do I know how much valid data is present
|
||||
* in buffer? Must be at least one period!
|
||||
* Guessing 2 periods, but if
|
||||
|
|
@ -630,7 +629,7 @@ static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream,
|
|||
/* start the master stream */
|
||||
snd_card_asihpi_pcm_timer_start(substream);
|
||||
if ((substream->stream == SNDRV_PCM_STREAM_CAPTURE) ||
|
||||
!card->support_mmap)
|
||||
!card->can_dma)
|
||||
hpi_handle_error(hpi_stream_start(dpcm->h_stream));
|
||||
break;
|
||||
|
||||
|
|
@ -766,6 +765,9 @@ static void snd_card_asihpi_timer_function(unsigned long data)
|
|||
/* number of bytes in on-card buffer */
|
||||
runtime->delay = on_card_bytes;
|
||||
|
||||
if (!card->can_dma)
|
||||
on_card_bytes = bytes_avail;
|
||||
|
||||
if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
pcm_buf_dma_ofs = ds->pcm_buf_host_rw_ofs - bytes_avail;
|
||||
if (state == HPI_STATE_STOPPED) {
|
||||
|
|
@ -844,30 +846,63 @@ static void snd_card_asihpi_timer_function(unsigned long data)
|
|||
|
||||
ds->pcm_buf_dma_ofs = pcm_buf_dma_ofs;
|
||||
|
||||
if (xfercount && (on_card_bytes <= ds->period_bytes)) {
|
||||
if (card->support_mmap) {
|
||||
if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
snd_printddd("P%d write x%04x\n",
|
||||
if (xfercount &&
|
||||
/* Limit use of on card fifo for playback */
|
||||
((on_card_bytes <= ds->period_bytes) ||
|
||||
(s->stream == SNDRV_PCM_STREAM_CAPTURE)))
|
||||
|
||||
{
|
||||
|
||||
unsigned int buf_ofs = ds->pcm_buf_host_rw_ofs % ds->buffer_bytes;
|
||||
unsigned int xfer1, xfer2;
|
||||
char *pd = &s->runtime->dma_area[buf_ofs];
|
||||
|
||||
if (card->can_dma) {
|
||||
xfer1 = xfercount;
|
||||
xfer2 = 0;
|
||||
} else {
|
||||
xfer1 = min(xfercount, ds->buffer_bytes - buf_ofs);
|
||||
xfer2 = xfercount - xfer1;
|
||||
}
|
||||
|
||||
if (s->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
snd_printddd("P%d write1 0x%04X 0x%04X\n",
|
||||
s->number, xfer1, buf_ofs);
|
||||
hpi_handle_error(
|
||||
hpi_outstream_write_buf(
|
||||
ds->h_stream, pd, xfer1,
|
||||
&ds->format));
|
||||
|
||||
if (xfer2) {
|
||||
pd = s->runtime->dma_area;
|
||||
|
||||
snd_printddd("P%d write2 0x%04X 0x%04X\n",
|
||||
s->number,
|
||||
ds->period_bytes);
|
||||
xfercount - xfer1, buf_ofs);
|
||||
hpi_handle_error(
|
||||
hpi_outstream_write_buf(
|
||||
ds->h_stream,
|
||||
&s->runtime->
|
||||
dma_area[0],
|
||||
xfercount,
|
||||
ds->h_stream, pd,
|
||||
xfercount - xfer1,
|
||||
&ds->format));
|
||||
} else {
|
||||
snd_printddd("C%d read x%04x\n",
|
||||
s->number,
|
||||
xfercount);
|
||||
}
|
||||
} else {
|
||||
snd_printddd("C%d read1 0x%04x\n",
|
||||
s->number, xfer1);
|
||||
hpi_handle_error(
|
||||
hpi_instream_read_buf(
|
||||
ds->h_stream,
|
||||
pd, xfer1));
|
||||
if (xfer2) {
|
||||
pd = s->runtime->dma_area;
|
||||
snd_printddd("C%d read2 0x%04x\n",
|
||||
s->number, xfer2);
|
||||
hpi_handle_error(
|
||||
hpi_instream_read_buf(
|
||||
ds->h_stream,
|
||||
NULL, xfercount));
|
||||
pd, xfer2));
|
||||
}
|
||||
ds->pcm_buf_host_rw_ofs = ds->pcm_buf_host_rw_ofs + xfercount;
|
||||
} /* else R/W will be handled by read/write callbacks */
|
||||
}
|
||||
ds->pcm_buf_host_rw_ofs = ds->pcm_buf_host_rw_ofs + xfercount;
|
||||
ds->pcm_buf_elapsed_dma_ofs = pcm_buf_dma_ofs;
|
||||
snd_pcm_period_elapsed(s);
|
||||
}
|
||||
|
|
@ -1004,11 +1039,9 @@ static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream)
|
|||
SNDRV_PCM_INFO_DOUBLE |
|
||||
SNDRV_PCM_INFO_BATCH |
|
||||
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||||
SNDRV_PCM_INFO_PAUSE;
|
||||
|
||||
if (card->support_mmap)
|
||||
snd_card_asihpi_playback.info |= SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID;
|
||||
SNDRV_PCM_INFO_PAUSE |
|
||||
SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID;
|
||||
|
||||
if (card->support_grouping)
|
||||
snd_card_asihpi_playback.info |= SNDRV_PCM_INFO_SYNC_START;
|
||||
|
|
@ -1016,7 +1049,7 @@ static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream)
|
|||
/* struct is copied, so can create initializer dynamically */
|
||||
runtime->hw = snd_card_asihpi_playback;
|
||||
|
||||
if (card->support_mmap)
|
||||
if (card->can_dma)
|
||||
err = snd_pcm_hw_constraint_pow2(runtime, 0,
|
||||
SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
|
||||
if (err < 0)
|
||||
|
|
@ -1046,58 +1079,6 @@ static int snd_card_asihpi_playback_close(struct snd_pcm_substream *substream)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int snd_card_asihpi_playback_copy(struct snd_pcm_substream *substream,
|
||||
int channel,
|
||||
snd_pcm_uframes_t pos,
|
||||
void __user *src,
|
||||
snd_pcm_uframes_t count)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
|
||||
unsigned int len;
|
||||
|
||||
len = frames_to_bytes(runtime, count);
|
||||
|
||||
if (copy_from_user(runtime->dma_area, src, len))
|
||||
return -EFAULT;
|
||||
|
||||
snd_printddd("playback copy%d %u bytes\n",
|
||||
substream->number, len);
|
||||
|
||||
hpi_handle_error(hpi_outstream_write_buf(dpcm->h_stream,
|
||||
runtime->dma_area, len, &dpcm->format));
|
||||
|
||||
dpcm->pcm_buf_host_rw_ofs += len;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int snd_card_asihpi_playback_silence(struct snd_pcm_substream *
|
||||
substream, int channel,
|
||||
snd_pcm_uframes_t pos,
|
||||
snd_pcm_uframes_t count)
|
||||
{
|
||||
/* Usually writes silence to DMA buffer, which should be overwritten
|
||||
by real audio later. Our fifos cannot be overwritten, and are not
|
||||
free-running DMAs. Silence is output on fifo underflow.
|
||||
This callback is still required to allow the copy callback to be used.
|
||||
*/
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops snd_card_asihpi_playback_ops = {
|
||||
.open = snd_card_asihpi_playback_open,
|
||||
.close = snd_card_asihpi_playback_close,
|
||||
.ioctl = snd_card_asihpi_playback_ioctl,
|
||||
.hw_params = snd_card_asihpi_pcm_hw_params,
|
||||
.hw_free = snd_card_asihpi_hw_free,
|
||||
.prepare = snd_card_asihpi_playback_prepare,
|
||||
.trigger = snd_card_asihpi_trigger,
|
||||
.pointer = snd_card_asihpi_playback_pointer,
|
||||
.copy = snd_card_asihpi_playback_copy,
|
||||
.silence = snd_card_asihpi_playback_silence,
|
||||
};
|
||||
|
||||
static struct snd_pcm_ops snd_card_asihpi_playback_mmap_ops = {
|
||||
.open = snd_card_asihpi_playback_open,
|
||||
.close = snd_card_asihpi_playback_close,
|
||||
|
|
@ -1229,18 +1210,16 @@ static int snd_card_asihpi_capture_open(struct snd_pcm_substream *substream)
|
|||
snd_card_asihpi_capture_format(card, dpcm->h_stream,
|
||||
&snd_card_asihpi_capture);
|
||||
snd_card_asihpi_pcm_samplerates(card, &snd_card_asihpi_capture);
|
||||
snd_card_asihpi_capture.info = SNDRV_PCM_INFO_INTERLEAVED;
|
||||
|
||||
if (card->support_mmap)
|
||||
snd_card_asihpi_capture.info |= SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID;
|
||||
snd_card_asihpi_capture.info = SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_MMAP_VALID;
|
||||
|
||||
if (card->support_grouping)
|
||||
snd_card_asihpi_capture.info |= SNDRV_PCM_INFO_SYNC_START;
|
||||
|
||||
runtime->hw = snd_card_asihpi_capture;
|
||||
|
||||
if (card->support_mmap)
|
||||
if (card->can_dma)
|
||||
err = snd_pcm_hw_constraint_pow2(runtime, 0,
|
||||
SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
|
||||
if (err < 0)
|
||||
|
|
@ -1264,28 +1243,6 @@ static int snd_card_asihpi_capture_close(struct snd_pcm_substream *substream)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int snd_card_asihpi_capture_copy(struct snd_pcm_substream *substream,
|
||||
int channel, snd_pcm_uframes_t pos,
|
||||
void __user *dst, snd_pcm_uframes_t count)
|
||||
{
|
||||
struct snd_pcm_runtime *runtime = substream->runtime;
|
||||
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
|
||||
u32 len;
|
||||
|
||||
len = frames_to_bytes(runtime, count);
|
||||
|
||||
snd_printddd("capture copy%d %d bytes\n", substream->number, len);
|
||||
hpi_handle_error(hpi_instream_read_buf(dpcm->h_stream,
|
||||
runtime->dma_area, len));
|
||||
|
||||
dpcm->pcm_buf_host_rw_ofs = dpcm->pcm_buf_host_rw_ofs + len;
|
||||
|
||||
if (copy_to_user(dst, runtime->dma_area, len))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
|
||||
.open = snd_card_asihpi_capture_open,
|
||||
.close = snd_card_asihpi_capture_close,
|
||||
|
|
@ -1297,18 +1254,6 @@ static struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
|
|||
.pointer = snd_card_asihpi_capture_pointer,
|
||||
};
|
||||
|
||||
static struct snd_pcm_ops snd_card_asihpi_capture_ops = {
|
||||
.open = snd_card_asihpi_capture_open,
|
||||
.close = snd_card_asihpi_capture_close,
|
||||
.ioctl = snd_card_asihpi_capture_ioctl,
|
||||
.hw_params = snd_card_asihpi_pcm_hw_params,
|
||||
.hw_free = snd_card_asihpi_hw_free,
|
||||
.prepare = snd_card_asihpi_capture_prepare,
|
||||
.trigger = snd_card_asihpi_trigger,
|
||||
.pointer = snd_card_asihpi_capture_pointer,
|
||||
.copy = snd_card_asihpi_capture_copy
|
||||
};
|
||||
|
||||
static int __devinit snd_card_asihpi_pcm_new(struct snd_card_asihpi *asihpi,
|
||||
int device, int substreams)
|
||||
{
|
||||
|
|
@ -1321,17 +1266,10 @@ static int __devinit snd_card_asihpi_pcm_new(struct snd_card_asihpi *asihpi,
|
|||
if (err < 0)
|
||||
return err;
|
||||
/* pointer to ops struct is stored, dont change ops afterwards! */
|
||||
if (asihpi->support_mmap) {
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
||||
&snd_card_asihpi_playback_mmap_ops);
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
|
||||
&snd_card_asihpi_capture_mmap_ops);
|
||||
} else {
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
|
||||
&snd_card_asihpi_playback_ops);
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
|
||||
&snd_card_asihpi_capture_ops);
|
||||
}
|
||||
|
||||
pcm->private_data = asihpi;
|
||||
pcm->info_flags = 0;
|
||||
|
|
@ -2895,14 +2833,14 @@ static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev,
|
|||
if (err)
|
||||
asihpi->update_interval_frames = 512;
|
||||
|
||||
if (!asihpi->support_mmap)
|
||||
if (!asihpi->can_dma)
|
||||
asihpi->update_interval_frames *= 2;
|
||||
|
||||
hpi_handle_error(hpi_instream_open(asihpi->adapter_index,
|
||||
0, &h_stream));
|
||||
|
||||
err = hpi_instream_host_buffer_free(h_stream);
|
||||
asihpi->support_mmap = (!err);
|
||||
asihpi->can_dma = (!err);
|
||||
|
||||
hpi_handle_error(hpi_instream_close(h_stream));
|
||||
|
||||
|
|
@ -2914,8 +2852,8 @@ static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev,
|
|||
asihpi->out_max_chans = 2;
|
||||
}
|
||||
|
||||
snd_printk(KERN_INFO "supports mmap:%d grouping:%d mrx:%d\n",
|
||||
asihpi->support_mmap,
|
||||
snd_printk(KERN_INFO "has dma:%d, grouping:%d, mrx:%d\n",
|
||||
asihpi->can_dma,
|
||||
asihpi->support_grouping,
|
||||
asihpi->support_mrx
|
||||
);
|
||||
|
|
@ -2945,10 +2883,7 @@ static int __devinit snd_asihpi_probe(struct pci_dev *pci_dev,
|
|||
by enable_hwdep module param*/
|
||||
snd_asihpi_hpi_new(asihpi, 0, NULL);
|
||||
|
||||
if (asihpi->support_mmap)
|
||||
strcpy(card->driver, "ASIHPI-MMAP");
|
||||
else
|
||||
strcpy(card->driver, "ASIHPI");
|
||||
strcpy(card->driver, "ASIHPI");
|
||||
|
||||
sprintf(card->shortname, "AudioScience ASI%4X", asihpi->type);
|
||||
sprintf(card->longname, "%s %i",
|
||||
|
|
|
|||
Loading…
Reference in New Issue