mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-06 02:24:14 +08:00
6769e988b0
Check for snd_pcm_ops structures that are only stored in the ops field of a snd_soc_platform_driver structure or passed as the third argument to snd_pcm_set_ops. The corresponding field or parameter is declared const, so snd_pcm_ops structures that have this property can be declared as const also. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct snd_pcm_ops i@p = { ... }; @ok1@ identifier r.i; struct snd_soc_platform_driver e; position p; @@ e.ops = &i@p; @ok2@ identifier r.i; expression e1, e2; position p; @@ snd_pcm_set_ops(e1, e2, &i@p) @bad@ position p != {r.p,ok1.p,ok2.p}; identifier r.i; struct snd_pcm_ops e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct snd_pcm_ops i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Takashi Iwai <tiwai@suse.de>
489 lines
12 KiB
C
489 lines
12 KiB
C
/**
|
|
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
|
|
*
|
|
* This source file is released under GPL v2 license (no other versions).
|
|
* See the COPYING file included in the main directory of this source
|
|
* distribution for the license terms and conditions.
|
|
*
|
|
* @File ctpcm.c
|
|
*
|
|
* @Brief
|
|
* This file contains the definition of the pcm device functions.
|
|
*
|
|
* @Author Liu Chun
|
|
* @Date Apr 2 2008
|
|
*
|
|
*/
|
|
|
|
#include "ctpcm.h"
|
|
#include "cttimer.h"
|
|
#include <linux/slab.h>
|
|
#include <sound/pcm.h>
|
|
|
|
/* Hardware descriptions for playback */
|
|
static struct snd_pcm_hardware ct_pcm_playback_hw = {
|
|
.info = (SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_PAUSE),
|
|
.formats = (SNDRV_PCM_FMTBIT_U8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S24_3LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE |
|
|
SNDRV_PCM_FMTBIT_FLOAT_LE),
|
|
.rates = (SNDRV_PCM_RATE_CONTINUOUS |
|
|
SNDRV_PCM_RATE_8000_192000),
|
|
.rate_min = 8000,
|
|
.rate_max = 192000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (128*1024),
|
|
.period_bytes_min = (64),
|
|
.period_bytes_max = (128*1024),
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
|
|
.info = (SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_PAUSE),
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
|
.rates = (SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_32000),
|
|
.rate_min = 32000,
|
|
.rate_max = 48000,
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (128*1024),
|
|
.period_bytes_min = (64),
|
|
.period_bytes_max = (128*1024),
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
/* Hardware descriptions for capture */
|
|
static struct snd_pcm_hardware ct_pcm_capture_hw = {
|
|
.info = (SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
|
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
|
SNDRV_PCM_INFO_PAUSE |
|
|
SNDRV_PCM_INFO_MMAP_VALID),
|
|
.formats = (SNDRV_PCM_FMTBIT_U8 |
|
|
SNDRV_PCM_FMTBIT_S16_LE |
|
|
SNDRV_PCM_FMTBIT_S24_3LE |
|
|
SNDRV_PCM_FMTBIT_S32_LE |
|
|
SNDRV_PCM_FMTBIT_FLOAT_LE),
|
|
.rates = (SNDRV_PCM_RATE_CONTINUOUS |
|
|
SNDRV_PCM_RATE_8000_96000),
|
|
.rate_min = 8000,
|
|
.rate_max = 96000,
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.buffer_bytes_max = (128*1024),
|
|
.period_bytes_min = (384),
|
|
.period_bytes_max = (64*1024),
|
|
.periods_min = 2,
|
|
.periods_max = 1024,
|
|
.fifo_size = 0,
|
|
};
|
|
|
|
static void ct_atc_pcm_interrupt(struct ct_atc_pcm *atc_pcm)
|
|
{
|
|
struct ct_atc_pcm *apcm = atc_pcm;
|
|
|
|
if (!apcm->substream)
|
|
return;
|
|
|
|
snd_pcm_period_elapsed(apcm->substream);
|
|
}
|
|
|
|
static void ct_atc_pcm_free_substream(struct snd_pcm_runtime *runtime)
|
|
{
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream);
|
|
|
|
atc->pcm_release_resources(atc, apcm);
|
|
ct_timer_instance_free(apcm->timer);
|
|
kfree(apcm);
|
|
runtime->private_data = NULL;
|
|
}
|
|
|
|
/* pcm playback operations */
|
|
static int ct_pcm_playback_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm;
|
|
int err;
|
|
|
|
apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
|
|
if (!apcm)
|
|
return -ENOMEM;
|
|
|
|
apcm->substream = substream;
|
|
apcm->interrupt = ct_atc_pcm_interrupt;
|
|
if (IEC958 == substream->pcm->device) {
|
|
runtime->hw = ct_spdif_passthru_playback_hw;
|
|
atc->spdif_out_passthru(atc, 1);
|
|
} else {
|
|
runtime->hw = ct_pcm_playback_hw;
|
|
if (FRONT == substream->pcm->device)
|
|
runtime->hw.channels_max = 8;
|
|
}
|
|
|
|
err = snd_pcm_hw_constraint_integer(runtime,
|
|
SNDRV_PCM_HW_PARAM_PERIODS);
|
|
if (err < 0) {
|
|
kfree(apcm);
|
|
return err;
|
|
}
|
|
err = snd_pcm_hw_constraint_minmax(runtime,
|
|
SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
|
|
1024, UINT_MAX);
|
|
if (err < 0) {
|
|
kfree(apcm);
|
|
return err;
|
|
}
|
|
|
|
apcm->timer = ct_timer_instance_new(atc->timer, apcm);
|
|
if (!apcm->timer) {
|
|
kfree(apcm);
|
|
return -ENOMEM;
|
|
}
|
|
runtime->private_data = apcm;
|
|
runtime->private_free = ct_atc_pcm_free_substream;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ct_pcm_playback_close(struct snd_pcm_substream *substream)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
|
|
/* TODO: Notify mixer inactive. */
|
|
if (IEC958 == substream->pcm->device)
|
|
atc->spdif_out_passthru(atc, 0);
|
|
|
|
/* The ct_atc_pcm object will be freed by runtime->private_free */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ct_pcm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *hw_params)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct ct_atc_pcm *apcm = substream->runtime->private_data;
|
|
int err;
|
|
|
|
err = snd_pcm_lib_malloc_pages(substream,
|
|
params_buffer_bytes(hw_params));
|
|
if (err < 0)
|
|
return err;
|
|
/* clear previous resources */
|
|
atc->pcm_release_resources(atc, apcm);
|
|
return err;
|
|
}
|
|
|
|
static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct ct_atc_pcm *apcm = substream->runtime->private_data;
|
|
|
|
/* clear previous resources */
|
|
atc->pcm_release_resources(atc, apcm);
|
|
/* Free snd-allocated pages */
|
|
return snd_pcm_lib_free_pages(substream);
|
|
}
|
|
|
|
|
|
static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
int err;
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
if (IEC958 == substream->pcm->device)
|
|
err = atc->spdif_passthru_playback_prepare(atc, apcm);
|
|
else
|
|
err = atc->pcm_playback_prepare(atc, apcm);
|
|
|
|
if (err < 0) {
|
|
dev_err(atc->card->dev,
|
|
"Preparing pcm playback failed!!!\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
atc->pcm_playback_start(atc, apcm);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
atc->pcm_playback_stop(atc, apcm);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_uframes_t
|
|
ct_pcm_playback_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
unsigned long position;
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
/* Read out playback position */
|
|
position = atc->pcm_playback_position(atc, apcm);
|
|
position = bytes_to_frames(runtime, position);
|
|
if (position >= runtime->buffer_size)
|
|
position = 0;
|
|
return position;
|
|
}
|
|
|
|
/* pcm capture operations */
|
|
static int ct_pcm_capture_open(struct snd_pcm_substream *substream)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm;
|
|
int err;
|
|
|
|
apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
|
|
if (!apcm)
|
|
return -ENOMEM;
|
|
|
|
apcm->started = 0;
|
|
apcm->substream = substream;
|
|
apcm->interrupt = ct_atc_pcm_interrupt;
|
|
runtime->hw = ct_pcm_capture_hw;
|
|
runtime->hw.rate_max = atc->rsr * atc->msr;
|
|
|
|
err = snd_pcm_hw_constraint_integer(runtime,
|
|
SNDRV_PCM_HW_PARAM_PERIODS);
|
|
if (err < 0) {
|
|
kfree(apcm);
|
|
return err;
|
|
}
|
|
err = snd_pcm_hw_constraint_minmax(runtime,
|
|
SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
|
|
1024, UINT_MAX);
|
|
if (err < 0) {
|
|
kfree(apcm);
|
|
return err;
|
|
}
|
|
|
|
apcm->timer = ct_timer_instance_new(atc->timer, apcm);
|
|
if (!apcm->timer) {
|
|
kfree(apcm);
|
|
return -ENOMEM;
|
|
}
|
|
runtime->private_data = apcm;
|
|
runtime->private_free = ct_atc_pcm_free_substream;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ct_pcm_capture_close(struct snd_pcm_substream *substream)
|
|
{
|
|
/* The ct_atc_pcm object will be freed by runtime->private_free */
|
|
/* TODO: Notify mixer inactive. */
|
|
return 0;
|
|
}
|
|
|
|
static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
int err;
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
err = atc->pcm_capture_prepare(atc, apcm);
|
|
if (err < 0) {
|
|
dev_err(atc->card->dev,
|
|
"Preparing pcm capture failed!!!\n");
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
|
|
{
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
atc->pcm_capture_start(atc, apcm);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
atc->pcm_capture_stop(atc, apcm);
|
|
break;
|
|
default:
|
|
atc->pcm_capture_stop(atc, apcm);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static snd_pcm_uframes_t
|
|
ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
|
|
{
|
|
unsigned long position;
|
|
struct ct_atc *atc = snd_pcm_substream_chip(substream);
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
struct ct_atc_pcm *apcm = runtime->private_data;
|
|
|
|
/* Read out playback position */
|
|
position = atc->pcm_capture_position(atc, apcm);
|
|
position = bytes_to_frames(runtime, position);
|
|
if (position >= runtime->buffer_size)
|
|
position = 0;
|
|
return position;
|
|
}
|
|
|
|
/* PCM operators for playback */
|
|
static const struct snd_pcm_ops ct_pcm_playback_ops = {
|
|
.open = ct_pcm_playback_open,
|
|
.close = ct_pcm_playback_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = ct_pcm_hw_params,
|
|
.hw_free = ct_pcm_hw_free,
|
|
.prepare = ct_pcm_playback_prepare,
|
|
.trigger = ct_pcm_playback_trigger,
|
|
.pointer = ct_pcm_playback_pointer,
|
|
.page = snd_pcm_sgbuf_ops_page,
|
|
};
|
|
|
|
/* PCM operators for capture */
|
|
static const struct snd_pcm_ops ct_pcm_capture_ops = {
|
|
.open = ct_pcm_capture_open,
|
|
.close = ct_pcm_capture_close,
|
|
.ioctl = snd_pcm_lib_ioctl,
|
|
.hw_params = ct_pcm_hw_params,
|
|
.hw_free = ct_pcm_hw_free,
|
|
.prepare = ct_pcm_capture_prepare,
|
|
.trigger = ct_pcm_capture_trigger,
|
|
.pointer = ct_pcm_capture_pointer,
|
|
.page = snd_pcm_sgbuf_ops_page,
|
|
};
|
|
|
|
static const struct snd_pcm_chmap_elem surround_map[] = {
|
|
{ .channels = 1,
|
|
.map = { SNDRV_CHMAP_MONO } },
|
|
{ .channels = 2,
|
|
.map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
|
|
{ }
|
|
};
|
|
|
|
static const struct snd_pcm_chmap_elem clfe_map[] = {
|
|
{ .channels = 1,
|
|
.map = { SNDRV_CHMAP_MONO } },
|
|
{ .channels = 2,
|
|
.map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
|
|
{ }
|
|
};
|
|
|
|
static const struct snd_pcm_chmap_elem side_map[] = {
|
|
{ .channels = 1,
|
|
.map = { SNDRV_CHMAP_MONO } },
|
|
{ .channels = 2,
|
|
.map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
|
|
{ }
|
|
};
|
|
|
|
/* Create ALSA pcm device */
|
|
int ct_alsa_pcm_create(struct ct_atc *atc,
|
|
enum CTALSADEVS device,
|
|
const char *device_name)
|
|
{
|
|
struct snd_pcm *pcm;
|
|
const struct snd_pcm_chmap_elem *map;
|
|
int chs;
|
|
int err;
|
|
int playback_count, capture_count;
|
|
|
|
playback_count = (IEC958 == device) ? 1 : 256;
|
|
capture_count = (FRONT == device) ? 1 : 0;
|
|
err = snd_pcm_new(atc->card, "ctxfi", device,
|
|
playback_count, capture_count, &pcm);
|
|
if (err < 0) {
|
|
dev_err(atc->card->dev, "snd_pcm_new failed!! Err=%d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
pcm->private_data = atc;
|
|
pcm->info_flags = 0;
|
|
pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
|
|
strlcpy(pcm->name, device_name, sizeof(pcm->name));
|
|
|
|
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops);
|
|
|
|
if (FRONT == device)
|
|
snd_pcm_set_ops(pcm,
|
|
SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops);
|
|
|
|
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
|
|
snd_dma_pci_data(atc->pci), 128*1024, 128*1024);
|
|
|
|
chs = 2;
|
|
switch (device) {
|
|
case FRONT:
|
|
chs = 8;
|
|
map = snd_pcm_std_chmaps;
|
|
break;
|
|
case SURROUND:
|
|
map = surround_map;
|
|
break;
|
|
case CLFE:
|
|
map = clfe_map;
|
|
break;
|
|
case SIDE:
|
|
map = side_map;
|
|
break;
|
|
default:
|
|
map = snd_pcm_std_chmaps;
|
|
break;
|
|
}
|
|
err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs,
|
|
0, NULL);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
atc->pcms[device] = pcm;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|