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asihpi.c
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/*
* Asihpi soundcard
* Copyright (c) by AudioScience Inc <alsa@audioscience.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation;
*
* 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
*
*
* The following is not a condition of use, merely a request:
* If you modify this program, particularly if you fix errors, AudioScience Inc
* would appreciate it if you grant us the right to use those modifications
* for any purpose including commercial applications.
*/
#include "hpi_internal.h"
#include "hpi_version.h"
#include "hpimsginit.h"
#include "hpioctl.h"
#include "hpicmn.h"
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/info.h>
#include <sound/initval.h>
#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 "
HPI_VER_STRING);
#if defined CONFIG_SND_DEBUG_VERBOSE
/**
* snd_printddd - very verbose debug printk
* @format: format string
*
* Works like snd_printk() for debugging purposes.
* Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
* Must set snd module debug parameter to 3 to enable at runtime.
*/
#define snd_printddd(format, args...) \
__snd_printk(3, __FILE__, __LINE__, format, ##args)
#else
#define snd_printddd(format, args...) do { } while (0)
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
static bool enable_hpi_hwdep = 1;
module_param_array(index, int, NULL, S_IRUGO);
MODULE_PARM_DESC(index, "ALSA index value for AudioScience soundcard.");
module_param_array(id, charp, NULL, S_IRUGO);
MODULE_PARM_DESC(id, "ALSA ID string for AudioScience soundcard.");
module_param_array(enable, bool, NULL, S_IRUGO);
MODULE_PARM_DESC(enable, "ALSA enable AudioScience soundcard.");
module_param(enable_hpi_hwdep, bool, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(enable_hpi_hwdep,
"ALSA enable HPI hwdep for AudioScience soundcard ");
/* identify driver */
#ifdef KERNEL_ALSA_BUILD
static char *build_info = "Built using headers from kernel source";
module_param(build_info, charp, S_IRUGO);
MODULE_PARM_DESC(build_info, "built using headers from kernel source");
#else
static char *build_info = "Built within ALSA source";
module_param(build_info, charp, S_IRUGO);
MODULE_PARM_DESC(build_info, "built within ALSA source");
#endif
/* set to 1 to dump every control from adapter to log */
static const int mixer_dump;
#define DEFAULT_SAMPLERATE 44100
static int adapter_fs = DEFAULT_SAMPLERATE;
/* defaults */
#define PERIODS_MIN 2
#define PERIOD_BYTES_MIN 2048
#define BUFFER_BYTES_MAX (512 * 1024)
#define MAX_CLOCKSOURCES (HPI_SAMPLECLOCK_SOURCE_LAST + 1 + 7)
struct clk_source {
int source;
int index;
char *name;
};
struct clk_cache {
int count;
int has_local;
struct clk_source s[MAX_CLOCKSOURCES];
};
/* Per card data */
struct snd_card_asihpi {
struct snd_card *card;
struct pci_dev *pci;
struct hpi_adapter *hpi;
u32 h_mixer;
struct clk_cache cc;
u16 can_dma;
u16 support_grouping;
u16 support_mrx;
u16 update_interval_frames;
u16 in_max_chans;
u16 out_max_chans;
u16 in_min_chans;
u16 out_min_chans;
};
/* Per stream data */
struct snd_card_asihpi_pcm {
struct timer_list timer;
unsigned int respawn_timer;
unsigned int hpi_buffer_attached;
unsigned int buffer_bytes;
unsigned int period_bytes;
unsigned int bytes_per_sec;
unsigned int pcm_buf_host_rw_ofs; /* Host R/W pos */
unsigned int pcm_buf_dma_ofs; /* DMA R/W offset in buffer */
unsigned int pcm_buf_elapsed_dma_ofs; /* DMA R/W offset in buffer */
unsigned int drained_count;
struct snd_pcm_substream *substream;
u32 h_stream;
struct hpi_format format;
};
/* universal stream verbs work with out or in stream handles */
/* Functions to allow driver to give a buffer to HPI for busmastering */
static u16 hpi_stream_host_buffer_attach(
u32 h_stream, /* handle to outstream. */
u32 size_in_bytes, /* size in bytes of bus mastering buffer */
u32 pci_address
)
{
struct hpi_message hm;
struct hpi_response hr;
unsigned int obj = hpi_handle_object(h_stream);
if (!h_stream)
return HPI_ERROR_INVALID_OBJ;
hpi_init_message_response(&hm, &hr, obj,
obj == HPI_OBJ_OSTREAM ?
HPI_OSTREAM_HOSTBUFFER_ALLOC :
HPI_ISTREAM_HOSTBUFFER_ALLOC);
hpi_handle_to_indexes(h_stream, &hm.adapter_index,
&hm.obj_index);
hm.u.d.u.buffer.buffer_size = size_in_bytes;
hm.u.d.u.buffer.pci_address = pci_address;
hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_GRANTADAPTER;
hpi_send_recv(&hm, &hr);
return hr.error;
}
static u16 hpi_stream_host_buffer_detach(u32 h_stream)
{
struct hpi_message hm;
struct hpi_response hr;
unsigned int obj = hpi_handle_object(h_stream);
if (!h_stream)
return HPI_ERROR_INVALID_OBJ;
hpi_init_message_response(&hm, &hr, obj,
obj == HPI_OBJ_OSTREAM ?
HPI_OSTREAM_HOSTBUFFER_FREE :
HPI_ISTREAM_HOSTBUFFER_FREE);
hpi_handle_to_indexes(h_stream, &hm.adapter_index,
&hm.obj_index);
hm.u.d.u.buffer.command = HPI_BUFFER_CMD_INTERNAL_REVOKEADAPTER;
hpi_send_recv(&hm, &hr);
return hr.error;
}
static inline u16 hpi_stream_start(u32 h_stream)
{
if (hpi_handle_object(h_stream) == HPI_OBJ_OSTREAM)
return hpi_outstream_start(h_stream);
else
return hpi_instream_start(h_stream);
}
static inline u16 hpi_stream_stop(u32 h_stream)
{
if (hpi_handle_object(h_stream) == HPI_OBJ_OSTREAM)
return hpi_outstream_stop(h_stream);
else
return hpi_instream_stop(h_stream);
}
static inline u16 hpi_stream_get_info_ex(
u32 h_stream,
u16 *pw_state,
u32 *pbuffer_size,
u32 *pdata_in_buffer,
u32 *psample_count,
u32 *pauxiliary_data
)
{
u16 e;
if (hpi_handle_object(h_stream) == HPI_OBJ_OSTREAM)
e = hpi_outstream_get_info_ex(h_stream, pw_state,
pbuffer_size, pdata_in_buffer,
psample_count, pauxiliary_data);
else
e = hpi_instream_get_info_ex(h_stream, pw_state,
pbuffer_size, pdata_in_buffer,
psample_count, pauxiliary_data);
return e;
}
static inline u16 hpi_stream_group_add(
u32 h_master,
u32 h_stream)
{
if (hpi_handle_object(h_master) == HPI_OBJ_OSTREAM)
return hpi_outstream_group_add(h_master, h_stream);
else
return hpi_instream_group_add(h_master, h_stream);
}
static inline u16 hpi_stream_group_reset(u32 h_stream)
{
if (hpi_handle_object(h_stream) == HPI_OBJ_OSTREAM)
return hpi_outstream_group_reset(h_stream);
else
return hpi_instream_group_reset(h_stream);
}
static inline u16 hpi_stream_group_get_map(
u32 h_stream, u32 *mo, u32 *mi)
{
if (hpi_handle_object(h_stream) == HPI_OBJ_OSTREAM)
return hpi_outstream_group_get_map(h_stream, mo, mi);
else
return hpi_instream_group_get_map(h_stream, mo, mi);
}
static u16 handle_error(u16 err, int line, char *filename)
{
if (err)
printk(KERN_WARNING
"in file %s, line %d: HPI error %d\n",
filename, line, err);
return err;
}
#define hpi_handle_error(x) handle_error(x, __LINE__, __FILE__)
/***************************** GENERAL PCM ****************/
static void print_hwparams(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *p)
{
char name[16];
snd_pcm_debug_name(substream, name, sizeof(name));
snd_printd("%s HWPARAMS\n", name);
snd_printd(" samplerate %d Hz\n", params_rate(p));
snd_printd(" channels %d\n", params_channels(p));
snd_printd(" format %d\n", params_format(p));
snd_printd(" subformat %d\n", params_subformat(p));
snd_printd(" buffer %d B\n", params_buffer_bytes(p));
snd_printd(" period %d B\n", params_period_bytes(p));
snd_printd(" access %d\n", params_access(p));
snd_printd(" period_size %d\n", params_period_size(p));
snd_printd(" periods %d\n", params_periods(p));
snd_printd(" buffer_size %d\n", params_buffer_size(p));
snd_printd(" %d B/s\n", params_rate(p) *
params_channels(p) *
snd_pcm_format_width(params_format(p)) / 8);
}
static snd_pcm_format_t hpi_to_alsa_formats[] = {
-1, /* INVALID */
SNDRV_PCM_FORMAT_U8, /* HPI_FORMAT_PCM8_UNSIGNED 1 */
SNDRV_PCM_FORMAT_S16, /* HPI_FORMAT_PCM16_SIGNED 2 */
-1, /* HPI_FORMAT_MPEG_L1 3 */
SNDRV_PCM_FORMAT_MPEG, /* HPI_FORMAT_MPEG_L2 4 */
SNDRV_PCM_FORMAT_MPEG, /* HPI_FORMAT_MPEG_L3 5 */
-1, /* HPI_FORMAT_DOLBY_AC2 6 */
-1, /* HPI_FORMAT_DOLBY_AC3 7 */
SNDRV_PCM_FORMAT_S16_BE,/* HPI_FORMAT_PCM16_BIGENDIAN 8 */
-1, /* HPI_FORMAT_AA_TAGIT1_HITS 9 */
-1, /* HPI_FORMAT_AA_TAGIT1_INSERTS 10 */
SNDRV_PCM_FORMAT_S32, /* HPI_FORMAT_PCM32_SIGNED 11 */
-1, /* HPI_FORMAT_RAW_BITSTREAM 12 */
-1, /* HPI_FORMAT_AA_TAGIT1_HITS_EX1 13 */
SNDRV_PCM_FORMAT_FLOAT, /* HPI_FORMAT_PCM32_FLOAT 14 */
#if 1
/* ALSA can't handle 3 byte sample size together with power-of-2
* constraint on buffer_bytes, so disable this format
*/
-1
#else
/* SNDRV_PCM_FORMAT_S24_3LE */ /* HPI_FORMAT_PCM24_SIGNED 15 */
#endif
};
static int snd_card_asihpi_format_alsa2hpi(snd_pcm_format_t alsa_format,
u16 *hpi_format)
{
u16 format;
for (format = HPI_FORMAT_PCM8_UNSIGNED;
format <= HPI_FORMAT_PCM24_SIGNED; format++) {
if (hpi_to_alsa_formats[format] == alsa_format) {
*hpi_format = format;
return 0;
}
}
snd_printd(KERN_WARNING "failed match for alsa format %d\n",
alsa_format);
*hpi_format = 0;
return -EINVAL;
}
static void snd_card_asihpi_pcm_samplerates(struct snd_card_asihpi *asihpi,
struct snd_pcm_hardware *pcmhw)
{
u16 err;
u32 h_control;
u32 sample_rate;
int idx;
unsigned int rate_min = 200000;
unsigned int rate_max = 0;
unsigned int rates = 0;
if (asihpi->support_mrx) {
rates |= SNDRV_PCM_RATE_CONTINUOUS;
rates |= SNDRV_PCM_RATE_8000_96000;
rate_min = 8000;
rate_max = 100000;
} else {
/* on cards without SRC,
valid rates are determined by sampleclock */
err = hpi_mixer_get_control(asihpi->h_mixer,
HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
HPI_CONTROL_SAMPLECLOCK, &h_control);
if (err) {
snd_printk(KERN_ERR
"No local sampleclock, err %d\n", err);
}
for (idx = -1; idx < 100; idx++) {
if (idx == -1) {
if (hpi_sample_clock_get_sample_rate(h_control,
&sample_rate))
continue;
} else if (hpi_sample_clock_query_local_rate(h_control,
idx, &sample_rate)) {
break;
}
rate_min = min(rate_min, sample_rate);
rate_max = max(rate_max, sample_rate);
switch (sample_rate) {
case 5512:
rates |= SNDRV_PCM_RATE_5512;
break;
case 8000:
rates |= SNDRV_PCM_RATE_8000;
break;
case 11025:
rates |= SNDRV_PCM_RATE_11025;
break;
case 16000:
rates |= SNDRV_PCM_RATE_16000;
break;
case 22050:
rates |= SNDRV_PCM_RATE_22050;
break;
case 32000:
rates |= SNDRV_PCM_RATE_32000;
break;
case 44100:
rates |= SNDRV_PCM_RATE_44100;
break;
case 48000:
rates |= SNDRV_PCM_RATE_48000;
break;
case 64000:
rates |= SNDRV_PCM_RATE_64000;
break;
case 88200:
rates |= SNDRV_PCM_RATE_88200;
break;
case 96000:
rates |= SNDRV_PCM_RATE_96000;
break;
case 176400:
rates |= SNDRV_PCM_RATE_176400;
break;
case 192000:
rates |= SNDRV_PCM_RATE_192000;
break;
default: /* some other rate */
rates |= SNDRV_PCM_RATE_KNOT;
}
}
}
pcmhw->rates = rates;
pcmhw->rate_min = rate_min;
pcmhw->rate_max = rate_max;
}
static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
int err;
u16 format;
int width;
unsigned int bytes_per_sec;
print_hwparams(substream, params);
err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
if (err < 0)
return err;
err = snd_card_asihpi_format_alsa2hpi(params_format(params), &format);
if (err)
return err;
hpi_handle_error(hpi_format_create(&dpcm->format,
params_channels(params),
format, params_rate(params), 0, 0));
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
if (hpi_instream_reset(dpcm->h_stream) != 0)
return -EINVAL;
if (hpi_instream_set_format(
dpcm->h_stream, &dpcm->format) != 0)
return -EINVAL;
}
dpcm->hpi_buffer_attached = 0;
if (card->can_dma) {
err = hpi_stream_host_buffer_attach(dpcm->h_stream,
params_buffer_bytes(params), runtime->dma_addr);
if (err == 0) {
snd_printdd(
"stream_host_buffer_attach succeeded %u %lu\n",
params_buffer_bytes(params),
(unsigned long)runtime->dma_addr);
} else {
snd_printd("stream_host_buffer_attach error %d\n",
err);
return -ENOMEM;
}
err = hpi_stream_get_info_ex(dpcm->h_stream, NULL,
&dpcm->hpi_buffer_attached,
NULL, NULL, NULL);
snd_printdd("stream_host_buffer_attach status 0x%x\n",
dpcm->hpi_buffer_attached);
}
bytes_per_sec = params_rate(params) * params_channels(params);
width = snd_pcm_format_width(params_format(params));
bytes_per_sec *= width;
bytes_per_sec /= 8;
if (width < 0 || bytes_per_sec == 0)
return -EINVAL;
dpcm->bytes_per_sec = bytes_per_sec;
dpcm->buffer_bytes = params_buffer_bytes(params);
dpcm->period_bytes = params_period_bytes(params);
return 0;
}
static int
snd_card_asihpi_hw_free(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
if (dpcm->hpi_buffer_attached)
hpi_stream_host_buffer_detach(dpcm->h_stream);
snd_pcm_lib_free_pages(substream);
return 0;
}
static void snd_card_asihpi_runtime_free(struct snd_pcm_runtime *runtime)
{
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
kfree(dpcm);
}
static void snd_card_asihpi_pcm_timer_start(struct snd_pcm_substream *
substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
int expiry;
expiry = HZ / 200;
/*? (dpcm->period_bytes * HZ / dpcm->bytes_per_sec); */
expiry = max(expiry, 1); /* don't let it be zero! */
dpcm->timer.expires = jiffies + expiry;
dpcm->respawn_timer = 1;
add_timer(&dpcm->timer);
}
static void snd_card_asihpi_pcm_timer_stop(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
dpcm->respawn_timer = 0;
del_timer(&dpcm->timer);
}
static int snd_card_asihpi_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_card_asihpi_pcm *dpcm = substream->runtime->private_data;
struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
struct snd_pcm_substream *s;
u16 e;
char name[16];
snd_pcm_debug_name(substream, name, sizeof(name));
snd_printdd("%s trigger\n", name);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
snd_pcm_group_for_each_entry(s, substream) {
struct snd_pcm_runtime *runtime = s->runtime;
struct snd_card_asihpi_pcm *ds = runtime->private_data;
if (snd_pcm_substream_chip(s) != card)
continue;
/* don't link Cap and Play */
if (substream->stream != s->stream)
continue;
ds->drained_count = 0;
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
* buffer is bigger it may contain even more
* data??
*/
unsigned int preload = ds->period_bytes * 1;
snd_printddd("%d preload x%x\n", s->number, preload);
hpi_handle_error(hpi_outstream_write_buf(
ds->h_stream,
&runtime->dma_area[0],
preload,
&ds->format));
ds->pcm_buf_host_rw_ofs = preload;
}
if (card->support_grouping) {
snd_printdd("%d group\n", s->number);
e = hpi_stream_group_add(
dpcm->h_stream,
ds->h_stream);
if (!e) {
snd_pcm_trigger_done(s, substream);
} else {
hpi_handle_error(e);
break;
}
} else
break;
}
snd_printdd("start\n");
/* start the master stream */
snd_card_asihpi_pcm_timer_start(substream);
if ((substream->stream == SNDRV_PCM_STREAM_CAPTURE) ||
!card->can_dma)
hpi_handle_error(hpi_stream_start(dpcm->h_stream));
break;
case SNDRV_PCM_TRIGGER_STOP:
snd_card_asihpi_pcm_timer_stop(substream);
snd_pcm_group_for_each_entry(s, substream) {
if (snd_pcm_substream_chip(s) != card)
continue;
/* don't link Cap and Play */
if (substream->stream != s->stream)
continue;
/*? workaround linked streams don't
transition to SETUP 20070706*/
s->runtime->status->state = SNDRV_PCM_STATE_SETUP;
if (card->support_grouping) {
snd_printdd("%d group\n", s->number);
snd_pcm_trigger_done(s, substream);
} else
break;
}
snd_printdd("stop\n");
/* _prepare and _hwparams reset the stream */
hpi_handle_error(hpi_stream_stop(dpcm->h_stream));
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
hpi_handle_error(
hpi_outstream_reset(dpcm->h_stream));
if (card->support_grouping)
hpi_handle_error(hpi_stream_group_reset(dpcm->h_stream));
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
snd_printdd("pause release\n");
hpi_handle_error(hpi_stream_start(dpcm->h_stream));
snd_card_asihpi_pcm_timer_start(substream);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
snd_printdd("pause\n");
snd_card_asihpi_pcm_timer_stop(substream);
hpi_handle_error(hpi_stream_stop(dpcm->h_stream));
break;
default:
snd_printd(KERN_ERR "\tINVALID\n");
return -EINVAL;
}
return 0;
}
/*algorithm outline
Without linking degenerates to getting single stream pos etc
Without mmap 2nd loop degenerates to snd_pcm_period_elapsed
*/
/*
pcm_buf_dma_ofs=get_buf_pos(s);
for_each_linked_stream(s) {
pcm_buf_dma_ofs=get_buf_pos(s);
min_buf_pos = modulo_min(min_buf_pos, pcm_buf_dma_ofs, buffer_bytes)
new_data = min(new_data, calc_new_data(pcm_buf_dma_ofs,irq_pos)
}
timer.expires = jiffies + predict_next_period_ready(min_buf_pos);
for_each_linked_stream(s) {
s->pcm_buf_dma_ofs = min_buf_pos;
if (new_data > period_bytes) {
if (mmap) {
irq_pos = (irq_pos + period_bytes) % buffer_bytes;
if (playback) {
write(period_bytes);
} else {
read(period_bytes);
}
}
snd_pcm_period_elapsed(s);
}
}
*/
/** Minimum of 2 modulo values. Works correctly when the difference between
* the values is less than half the modulus
*/
static inline unsigned int modulo_min(unsigned int a, unsigned int b,
unsigned long int modulus)
{
unsigned int result;
if (((a-b) % modulus) < (modulus/2))
result = b;
else
result = a;
return result;
}
/** Timer function, equivalent to interrupt service routine for cards
*/
static void snd_card_asihpi_timer_function(unsigned long data)
{
struct snd_card_asihpi_pcm *dpcm = (struct snd_card_asihpi_pcm *)data;
struct snd_pcm_substream *substream = dpcm->substream;
struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime;
struct snd_pcm_substream *s;
unsigned int newdata = 0;
unsigned int pcm_buf_dma_ofs, min_buf_pos = 0;
unsigned int remdata, xfercount, next_jiffies;
int first = 1;
int loops = 0;
u16 state;
u32 buffer_size, bytes_avail, samples_played, on_card_bytes;
char name[16];
snd_pcm_debug_name(substream, name, sizeof(name));
snd_printdd("%s snd_card_asihpi_timer_function\n", name);
/* find minimum newdata and buffer pos in group */
snd_pcm_group_for_each_entry(s, substream) {
struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
runtime = s->runtime;
if (snd_pcm_substream_chip(s) != card)
continue;
/* don't link Cap and Play */
if (substream->stream != s->stream)
continue;
hpi_handle_error(hpi_stream_get_info_ex(
ds->h_stream, &state,
&buffer_size, &bytes_avail,
&samples_played, &on_card_bytes));
/* 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) {
if (bytes_avail == 0) {
hpi_handle_error(hpi_stream_start(ds->h_stream));
snd_printdd("P%d start\n", s->number);
ds->drained_count = 0;
}
} else if (state == HPI_STATE_DRAINED) {
snd_printd(KERN_WARNING "P%d drained\n",
s->number);
ds->drained_count++;
if (ds->drained_count > 20) {
snd_pcm_stop(s, SNDRV_PCM_STATE_XRUN);
continue;
}
} else {
ds->drained_count = 0;
}
} else
pcm_buf_dma_ofs = bytes_avail + ds->pcm_buf_host_rw_ofs;
if (first) {
/* can't statically init min when wrap is involved */
min_buf_pos = pcm_buf_dma_ofs;
newdata = (pcm_buf_dma_ofs - ds->pcm_buf_elapsed_dma_ofs) % ds->buffer_bytes;
first = 0;
} else {
min_buf_pos =
modulo_min(min_buf_pos, pcm_buf_dma_ofs, UINT_MAX+1L);
newdata = min(
(pcm_buf_dma_ofs - ds->pcm_buf_elapsed_dma_ofs) % ds->buffer_bytes,
newdata);
}
snd_printdd("hw_ptr 0x%04lX, appl_ptr 0x%04lX\n",
(unsigned long)frames_to_bytes(runtime,
runtime->status->hw_ptr),
(unsigned long)frames_to_bytes(runtime,
runtime->control->appl_ptr));
snd_printdd("%d S=%d, "
"rw=0x%04X, dma=0x%04X, left=0x%04X, "
"aux=0x%04X space=0x%04X\n",
s->number, state,
ds->pcm_buf_host_rw_ofs, pcm_buf_dma_ofs,
(int)bytes_avail,
(int)on_card_bytes, buffer_size-bytes_avail);
loops++;
}
pcm_buf_dma_ofs = min_buf_pos;
remdata = newdata % dpcm->period_bytes;
xfercount = newdata - remdata; /* a multiple of period_bytes */
/* come back when on_card_bytes has decreased enough to allow
write to happen, or when data has been consumed to make another
period
*/
if (xfercount && (on_card_bytes > dpcm->period_bytes))
next_jiffies = ((on_card_bytes - dpcm->period_bytes) * HZ / dpcm->bytes_per_sec);
else
next_jiffies = ((dpcm->period_bytes - remdata) * HZ / dpcm->bytes_per_sec);
next_jiffies = max(next_jiffies, 1U);
dpcm->timer.expires = jiffies + next_jiffies;
snd_printdd("jif %d buf pos 0x%04X newdata 0x%04X xfer 0x%04X\n",
next_jiffies, pcm_buf_dma_ofs, newdata, xfercount);
snd_pcm_group_for_each_entry(s, substream) {
struct snd_card_asihpi_pcm *ds = s->runtime->private_data;
/* don't link Cap and Play */
if (substream->stream != s->stream)
continue;
ds->pcm_buf_dma_ofs = pcm_buf_dma_ofs;
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) { /* buffer wrap is handled at lower level */
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,
xfercount - xfer1, buf_ofs);
hpi_handle_error(
hpi_outstream_write_buf(
ds->h_stream, pd,
xfercount - xfer1,
&ds->format));
}
} 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,
pd, xfer2));
}
}
ds->pcm_buf_host_rw_ofs += xfercount;
ds->pcm_buf_elapsed_dma_ofs += xfercount;
snd_pcm_period_elapsed(s);
}
}
if (dpcm->respawn_timer)
add_timer(&dpcm->timer);
}
/***************************** PLAYBACK OPS ****************/
static int snd_card_asihpi_playback_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
char name[16];
snd_pcm_debug_name(substream, name, sizeof(name));
snd_printddd(KERN_INFO "%s ioctl %d\n", name, cmd);
return snd_pcm_lib_ioctl(substream, cmd, arg);
}
static int snd_card_asihpi_playback_prepare(struct snd_pcm_substream *
substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
snd_printdd("P%d prepare\n", substream->number);
hpi_handle_error(hpi_outstream_reset(dpcm->h_stream));
dpcm->pcm_buf_host_rw_ofs = 0;
dpcm->pcm_buf_dma_ofs = 0;
dpcm->pcm_buf_elapsed_dma_ofs = 0;
return 0;
}
static snd_pcm_uframes_t
snd_card_asihpi_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm = runtime->private_data;
snd_pcm_uframes_t ptr;
char name[16];
snd_pcm_debug_name(substream, name, sizeof(name));
ptr = bytes_to_frames(runtime, dpcm->pcm_buf_dma_ofs % dpcm->buffer_bytes);
snd_printddd("%s pointer = 0x%04lx\n", name, (unsigned long)ptr);
return ptr;
}
static u64 snd_card_asihpi_playback_formats(struct snd_card_asihpi *asihpi,
u32 h_stream)
{
struct hpi_format hpi_format;
u16 format;
u16 err;
u32 h_control;
u32 sample_rate = 48000;
u64 formats = 0;
/* on cards without SRC, must query at valid rate,
* maybe set by external sync
*/
err = hpi_mixer_get_control(asihpi->h_mixer,
HPI_SOURCENODE_CLOCK_SOURCE, 0, 0, 0,
HPI_CONTROL_SAMPLECLOCK, &h_control);
if (!err)
err = hpi_sample_clock_get_sample_rate(h_control,
&sample_rate);
for (format = HPI_FORMAT_PCM8_UNSIGNED;
format <= HPI_FORMAT_PCM24_SIGNED; format++) {
err = hpi_format_create(&hpi_format, asihpi->out_max_chans,
format, sample_rate, 128000, 0);
if (!err)
err = hpi_outstream_query_format(h_stream, &hpi_format);
if (!err && (hpi_to_alsa_formats[format] != -1))
formats |= (1ULL << hpi_to_alsa_formats[format]);
}
return formats;
}
static int snd_card_asihpi_playback_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_card_asihpi_pcm *dpcm;
struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
struct snd_pcm_hardware snd_card_asihpi_playback;
int err;
dpcm = kzalloc(sizeof(*dpcm), GFP_KERNEL);
if (dpcm == NULL)
return -ENOMEM;
err = hpi_outstream_open(card->hpi->adapter->index,
substream->number, &dpcm->h_stream);
hpi_handle_error(err);
if (err)
kfree(dpcm);
if (err == HPI_ERROR_OBJ_ALREADY_OPEN)
return -EBUSY;
if (err)
return -EIO;
/*? also check ASI5000 samplerate source
If external, only support external rate.
If internal and other stream playing, can't switch
*/