592 lines
14 KiB
C
592 lines
14 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* ALSA PCM device for the
|
||
|
|
* ALSA interface to cobalt PCM capture streams
|
||
|
|
*
|
||
|
|
* Copyright 2014-2015 Cisco Systems, Inc. and/or its affiliates.
|
||
|
|
* All rights reserved.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/vmalloc.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
|
||
|
|
#include <media/v4l2-device.h>
|
||
|
|
|
||
|
|
#include <sound/core.h>
|
||
|
|
#include <sound/pcm.h>
|
||
|
|
|
||
|
|
#include "cobalt-driver.h"
|
||
|
|
#include "cobalt-alsa.h"
|
||
|
|
#include "cobalt-alsa-pcm.h"
|
||
|
|
|
||
|
|
static unsigned int pcm_debug;
|
||
|
|
module_param(pcm_debug, int, 0644);
|
||
|
|
MODULE_PARM_DESC(pcm_debug, "enable debug messages for pcm");
|
||
|
|
|
||
|
|
#define dprintk(fmt, arg...) \
|
||
|
|
do { \
|
||
|
|
if (pcm_debug) \
|
||
|
|
pr_info("cobalt-alsa-pcm %s: " fmt, __func__, ##arg); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
static const struct snd_pcm_hardware snd_cobalt_hdmi_capture = {
|
||
|
|
.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||
|
|
SNDRV_PCM_INFO_MMAP |
|
||
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
||
|
|
SNDRV_PCM_INFO_MMAP_VALID,
|
||
|
|
|
||
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
|
||
|
|
|
||
|
|
.rates = SNDRV_PCM_RATE_48000,
|
||
|
|
|
||
|
|
.rate_min = 48000,
|
||
|
|
.rate_max = 48000,
|
||
|
|
.channels_min = 1,
|
||
|
|
.channels_max = 8,
|
||
|
|
.buffer_bytes_max = 4 * 240 * 8 * 4, /* 5 ms of data */
|
||
|
|
.period_bytes_min = 1920, /* 1 sample = 8 * 4 bytes */
|
||
|
|
.period_bytes_max = 240 * 8 * 4, /* 5 ms of 8 channel data */
|
||
|
|
.periods_min = 1,
|
||
|
|
.periods_max = 4,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_pcm_hardware snd_cobalt_playback = {
|
||
|
|
.info = SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||
|
|
SNDRV_PCM_INFO_MMAP |
|
||
|
|
SNDRV_PCM_INFO_INTERLEAVED |
|
||
|
|
SNDRV_PCM_INFO_MMAP_VALID,
|
||
|
|
|
||
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
|
||
|
|
|
||
|
|
.rates = SNDRV_PCM_RATE_48000,
|
||
|
|
|
||
|
|
.rate_min = 48000,
|
||
|
|
.rate_max = 48000,
|
||
|
|
.channels_min = 1,
|
||
|
|
.channels_max = 8,
|
||
|
|
.buffer_bytes_max = 4 * 240 * 8 * 4, /* 5 ms of data */
|
||
|
|
.period_bytes_min = 1920, /* 1 sample = 8 * 4 bytes */
|
||
|
|
.period_bytes_max = 240 * 8 * 4, /* 5 ms of 8 channel data */
|
||
|
|
.periods_min = 1,
|
||
|
|
.periods_max = 4,
|
||
|
|
};
|
||
|
|
|
||
|
|
static void sample_cpy(u8 *dst, const u8 *src, u32 len, bool is_s32)
|
||
|
|
{
|
||
|
|
static const unsigned map[8] = { 0, 1, 5, 4, 2, 3, 6, 7 };
|
||
|
|
unsigned idx = 0;
|
||
|
|
|
||
|
|
while (len >= (is_s32 ? 4 : 2)) {
|
||
|
|
unsigned offset = map[idx] * 4;
|
||
|
|
u32 val = src[offset + 1] + (src[offset + 2] << 8) +
|
||
|
|
(src[offset + 3] << 16);
|
||
|
|
|
||
|
|
if (is_s32) {
|
||
|
|
*dst++ = 0;
|
||
|
|
*dst++ = val & 0xff;
|
||
|
|
}
|
||
|
|
*dst++ = (val >> 8) & 0xff;
|
||
|
|
*dst++ = (val >> 16) & 0xff;
|
||
|
|
len -= is_s32 ? 4 : 2;
|
||
|
|
idx++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void cobalt_alsa_announce_pcm_data(struct snd_cobalt_card *cobsc,
|
||
|
|
u8 *pcm_data,
|
||
|
|
size_t skip,
|
||
|
|
size_t samples)
|
||
|
|
{
|
||
|
|
struct snd_pcm_substream *substream;
|
||
|
|
struct snd_pcm_runtime *runtime;
|
||
|
|
unsigned long flags;
|
||
|
|
unsigned int oldptr;
|
||
|
|
unsigned int stride;
|
||
|
|
int length = samples;
|
||
|
|
int period_elapsed = 0;
|
||
|
|
bool is_s32;
|
||
|
|
|
||
|
|
dprintk("cobalt alsa announce ptr=%p data=%p num_bytes=%zd\n", cobsc,
|
||
|
|
pcm_data, samples);
|
||
|
|
|
||
|
|
substream = cobsc->capture_pcm_substream;
|
||
|
|
if (substream == NULL) {
|
||
|
|
dprintk("substream was NULL\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
runtime = substream->runtime;
|
||
|
|
if (runtime == NULL) {
|
||
|
|
dprintk("runtime was NULL\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
is_s32 = runtime->format == SNDRV_PCM_FORMAT_S32_LE;
|
||
|
|
|
||
|
|
stride = runtime->frame_bits >> 3;
|
||
|
|
if (stride == 0) {
|
||
|
|
dprintk("stride is zero\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (length == 0) {
|
||
|
|
dprintk("%s: length was zero\n", __func__);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (runtime->dma_area == NULL) {
|
||
|
|
dprintk("dma area was NULL - ignoring\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
oldptr = cobsc->hwptr_done_capture;
|
||
|
|
if (oldptr + length >= runtime->buffer_size) {
|
||
|
|
unsigned int cnt = runtime->buffer_size - oldptr;
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
for (i = 0; i < cnt; i++)
|
||
|
|
sample_cpy(runtime->dma_area + (oldptr + i) * stride,
|
||
|
|
pcm_data + i * skip,
|
||
|
|
stride, is_s32);
|
||
|
|
for (i = cnt; i < length; i++)
|
||
|
|
sample_cpy(runtime->dma_area + (i - cnt) * stride,
|
||
|
|
pcm_data + i * skip, stride, is_s32);
|
||
|
|
} else {
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
for (i = 0; i < length; i++)
|
||
|
|
sample_cpy(runtime->dma_area + (oldptr + i) * stride,
|
||
|
|
pcm_data + i * skip,
|
||
|
|
stride, is_s32);
|
||
|
|
}
|
||
|
|
snd_pcm_stream_lock_irqsave(substream, flags);
|
||
|
|
|
||
|
|
cobsc->hwptr_done_capture += length;
|
||
|
|
if (cobsc->hwptr_done_capture >=
|
||
|
|
runtime->buffer_size)
|
||
|
|
cobsc->hwptr_done_capture -=
|
||
|
|
runtime->buffer_size;
|
||
|
|
|
||
|
|
cobsc->capture_transfer_done += length;
|
||
|
|
if (cobsc->capture_transfer_done >=
|
||
|
|
runtime->period_size) {
|
||
|
|
cobsc->capture_transfer_done -=
|
||
|
|
runtime->period_size;
|
||
|
|
period_elapsed = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_pcm_stream_unlock_irqrestore(substream, flags);
|
||
|
|
|
||
|
|
if (period_elapsed)
|
||
|
|
snd_pcm_period_elapsed(substream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int alsa_fnc(struct vb2_buffer *vb, void *priv)
|
||
|
|
{
|
||
|
|
struct cobalt_stream *s = priv;
|
||
|
|
unsigned char *p = vb2_plane_vaddr(vb, 0);
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (pcm_debug) {
|
||
|
|
pr_info("alsa: ");
|
||
|
|
for (i = 0; i < 8 * 4; i++) {
|
||
|
|
if (!(i & 3))
|
||
|
|
pr_cont(" ");
|
||
|
|
pr_cont("%02x", p[i]);
|
||
|
|
}
|
||
|
|
pr_cont("\n");
|
||
|
|
}
|
||
|
|
cobalt_alsa_announce_pcm_data(s->alsa,
|
||
|
|
vb2_plane_vaddr(vb, 0),
|
||
|
|
8 * 4,
|
||
|
|
vb2_get_plane_payload(vb, 0) / (8 * 4));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_capture_open(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
struct cobalt_stream *s = cobsc->s;
|
||
|
|
|
||
|
|
runtime->hw = snd_cobalt_hdmi_capture;
|
||
|
|
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
|
||
|
|
cobsc->capture_pcm_substream = substream;
|
||
|
|
runtime->private_data = s;
|
||
|
|
cobsc->alsa_record_cnt++;
|
||
|
|
if (cobsc->alsa_record_cnt == 1) {
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
rc = vb2_thread_start(&s->q, alsa_fnc, s, s->vdev.name);
|
||
|
|
if (rc) {
|
||
|
|
cobsc->alsa_record_cnt--;
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_capture_close(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
struct cobalt_stream *s = cobsc->s;
|
||
|
|
|
||
|
|
cobsc->alsa_record_cnt--;
|
||
|
|
if (cobsc->alsa_record_cnt == 0)
|
||
|
|
vb2_thread_stop(&s->q);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_ioctl(struct snd_pcm_substream *substream,
|
||
|
|
unsigned int cmd, void *arg)
|
||
|
|
{
|
||
|
|
return snd_pcm_lib_ioctl(substream, cmd, arg);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs,
|
||
|
|
size_t size)
|
||
|
|
{
|
||
|
|
struct snd_pcm_runtime *runtime = subs->runtime;
|
||
|
|
|
||
|
|
dprintk("Allocating vbuffer\n");
|
||
|
|
if (runtime->dma_area) {
|
||
|
|
if (runtime->dma_bytes > size)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
vfree(runtime->dma_area);
|
||
|
|
}
|
||
|
|
runtime->dma_area = vmalloc(size);
|
||
|
|
if (!runtime->dma_area)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
runtime->dma_bytes = size;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_hw_params(struct snd_pcm_substream *substream,
|
||
|
|
struct snd_pcm_hw_params *params)
|
||
|
|
{
|
||
|
|
dprintk("%s called\n", __func__);
|
||
|
|
|
||
|
|
return snd_pcm_alloc_vmalloc_buffer(substream,
|
||
|
|
params_buffer_bytes(params));
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_hw_free(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
if (substream->runtime->dma_area) {
|
||
|
|
dprintk("freeing pcm capture region\n");
|
||
|
|
vfree(substream->runtime->dma_area);
|
||
|
|
substream->runtime->dma_area = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
|
||
|
|
cobsc->hwptr_done_capture = 0;
|
||
|
|
cobsc->capture_transfer_done = 0;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
|
{
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
return 0;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static
|
||
|
|
snd_pcm_uframes_t snd_cobalt_pcm_pointer(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
snd_pcm_uframes_t hwptr_done;
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
|
||
|
|
hwptr_done = cobsc->hwptr_done_capture;
|
||
|
|
|
||
|
|
return hwptr_done;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void pb_sample_cpy(u8 *dst, const u8 *src, u32 len, bool is_s32)
|
||
|
|
{
|
||
|
|
static const unsigned map[8] = { 0, 1, 5, 4, 2, 3, 6, 7 };
|
||
|
|
unsigned idx = 0;
|
||
|
|
|
||
|
|
while (len >= (is_s32 ? 4 : 2)) {
|
||
|
|
unsigned offset = map[idx] * 4;
|
||
|
|
u8 *out = dst + offset;
|
||
|
|
|
||
|
|
*out++ = 0;
|
||
|
|
if (is_s32) {
|
||
|
|
src++;
|
||
|
|
*out++ = *src++;
|
||
|
|
} else {
|
||
|
|
*out++ = 0;
|
||
|
|
}
|
||
|
|
*out++ = *src++;
|
||
|
|
*out = *src++;
|
||
|
|
len -= is_s32 ? 4 : 2;
|
||
|
|
idx++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void cobalt_alsa_pb_pcm_data(struct snd_cobalt_card *cobsc,
|
||
|
|
u8 *pcm_data,
|
||
|
|
size_t skip,
|
||
|
|
size_t samples)
|
||
|
|
{
|
||
|
|
struct snd_pcm_substream *substream;
|
||
|
|
struct snd_pcm_runtime *runtime;
|
||
|
|
unsigned long flags;
|
||
|
|
unsigned int pos;
|
||
|
|
unsigned int stride;
|
||
|
|
bool is_s32;
|
||
|
|
unsigned i;
|
||
|
|
|
||
|
|
dprintk("cobalt alsa pb ptr=%p data=%p samples=%zd\n", cobsc,
|
||
|
|
pcm_data, samples);
|
||
|
|
|
||
|
|
substream = cobsc->playback_pcm_substream;
|
||
|
|
if (substream == NULL) {
|
||
|
|
dprintk("substream was NULL\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
runtime = substream->runtime;
|
||
|
|
if (runtime == NULL) {
|
||
|
|
dprintk("runtime was NULL\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
is_s32 = runtime->format == SNDRV_PCM_FORMAT_S32_LE;
|
||
|
|
stride = runtime->frame_bits >> 3;
|
||
|
|
if (stride == 0) {
|
||
|
|
dprintk("stride is zero\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (samples == 0) {
|
||
|
|
dprintk("%s: samples was zero\n", __func__);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (runtime->dma_area == NULL) {
|
||
|
|
dprintk("dma area was NULL - ignoring\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
pos = cobsc->pb_pos % cobsc->pb_size;
|
||
|
|
for (i = 0; i < cobsc->pb_count / (8 * 4); i++)
|
||
|
|
pb_sample_cpy(pcm_data + i * skip,
|
||
|
|
runtime->dma_area + pos + i * stride,
|
||
|
|
stride, is_s32);
|
||
|
|
snd_pcm_stream_lock_irqsave(substream, flags);
|
||
|
|
|
||
|
|
cobsc->pb_pos += i * stride;
|
||
|
|
|
||
|
|
snd_pcm_stream_unlock_irqrestore(substream, flags);
|
||
|
|
if (cobsc->pb_pos % cobsc->pb_count == 0)
|
||
|
|
snd_pcm_period_elapsed(substream);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int alsa_pb_fnc(struct vb2_buffer *vb, void *priv)
|
||
|
|
{
|
||
|
|
struct cobalt_stream *s = priv;
|
||
|
|
|
||
|
|
if (s->alsa->alsa_pb_channel)
|
||
|
|
cobalt_alsa_pb_pcm_data(s->alsa,
|
||
|
|
vb2_plane_vaddr(vb, 0),
|
||
|
|
8 * 4,
|
||
|
|
vb2_get_plane_payload(vb, 0) / (8 * 4));
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_playback_open(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
|
struct cobalt_stream *s = cobsc->s;
|
||
|
|
|
||
|
|
runtime->hw = snd_cobalt_playback;
|
||
|
|
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
|
||
|
|
cobsc->playback_pcm_substream = substream;
|
||
|
|
runtime->private_data = s;
|
||
|
|
cobsc->alsa_playback_cnt++;
|
||
|
|
if (cobsc->alsa_playback_cnt == 1) {
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
rc = vb2_thread_start(&s->q, alsa_pb_fnc, s, s->vdev.name);
|
||
|
|
if (rc) {
|
||
|
|
cobsc->alsa_playback_cnt--;
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_playback_close(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
struct cobalt_stream *s = cobsc->s;
|
||
|
|
|
||
|
|
cobsc->alsa_playback_cnt--;
|
||
|
|
if (cobsc->alsa_playback_cnt == 0)
|
||
|
|
vb2_thread_stop(&s->q);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_pb_prepare(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
|
||
|
|
cobsc->pb_size = snd_pcm_lib_buffer_bytes(substream);
|
||
|
|
cobsc->pb_count = snd_pcm_lib_period_bytes(substream);
|
||
|
|
cobsc->pb_pos = 0;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cobalt_pcm_pb_trigger(struct snd_pcm_substream *substream,
|
||
|
|
int cmd)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
|
||
|
|
switch (cmd) {
|
||
|
|
case SNDRV_PCM_TRIGGER_START:
|
||
|
|
if (cobsc->alsa_pb_channel)
|
||
|
|
return -EBUSY;
|
||
|
|
cobsc->alsa_pb_channel = true;
|
||
|
|
return 0;
|
||
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
||
|
|
cobsc->alsa_pb_channel = false;
|
||
|
|
return 0;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static
|
||
|
|
snd_pcm_uframes_t snd_cobalt_pcm_pb_pointer(struct snd_pcm_substream *substream)
|
||
|
|
{
|
||
|
|
struct snd_cobalt_card *cobsc = snd_pcm_substream_chip(substream);
|
||
|
|
size_t ptr;
|
||
|
|
|
||
|
|
ptr = cobsc->pb_pos;
|
||
|
|
|
||
|
|
return bytes_to_frames(substream->runtime, ptr) %
|
||
|
|
substream->runtime->buffer_size;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
|
||
|
|
unsigned long offset)
|
||
|
|
{
|
||
|
|
void *pageptr = subs->runtime->dma_area + offset;
|
||
|
|
|
||
|
|
return vmalloc_to_page(pageptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct snd_pcm_ops snd_cobalt_pcm_capture_ops = {
|
||
|
|
.open = snd_cobalt_pcm_capture_open,
|
||
|
|
.close = snd_cobalt_pcm_capture_close,
|
||
|
|
.ioctl = snd_cobalt_pcm_ioctl,
|
||
|
|
.hw_params = snd_cobalt_pcm_hw_params,
|
||
|
|
.hw_free = snd_cobalt_pcm_hw_free,
|
||
|
|
.prepare = snd_cobalt_pcm_prepare,
|
||
|
|
.trigger = snd_cobalt_pcm_trigger,
|
||
|
|
.pointer = snd_cobalt_pcm_pointer,
|
||
|
|
.page = snd_pcm_get_vmalloc_page,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct snd_pcm_ops snd_cobalt_pcm_playback_ops = {
|
||
|
|
.open = snd_cobalt_pcm_playback_open,
|
||
|
|
.close = snd_cobalt_pcm_playback_close,
|
||
|
|
.ioctl = snd_cobalt_pcm_ioctl,
|
||
|
|
.hw_params = snd_cobalt_pcm_hw_params,
|
||
|
|
.hw_free = snd_cobalt_pcm_hw_free,
|
||
|
|
.prepare = snd_cobalt_pcm_pb_prepare,
|
||
|
|
.trigger = snd_cobalt_pcm_pb_trigger,
|
||
|
|
.pointer = snd_cobalt_pcm_pb_pointer,
|
||
|
|
.page = snd_pcm_get_vmalloc_page,
|
||
|
|
};
|
||
|
|
|
||
|
|
int snd_cobalt_pcm_create(struct snd_cobalt_card *cobsc)
|
||
|
|
{
|
||
|
|
struct snd_pcm *sp;
|
||
|
|
struct snd_card *sc = cobsc->sc;
|
||
|
|
struct cobalt_stream *s = cobsc->s;
|
||
|
|
struct cobalt *cobalt = s->cobalt;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
s->q.gfp_flags |= __GFP_ZERO;
|
||
|
|
|
||
|
|
if (!s->is_output) {
|
||
|
|
cobalt_s_bit_sysctrl(cobalt,
|
||
|
|
COBALT_SYS_CTRL_AUDIO_IPP_RESETN_BIT(s->video_channel),
|
||
|
|
0);
|
||
|
|
mdelay(2);
|
||
|
|
cobalt_s_bit_sysctrl(cobalt,
|
||
|
|
COBALT_SYS_CTRL_AUDIO_IPP_RESETN_BIT(s->video_channel),
|
||
|
|
1);
|
||
|
|
mdelay(1);
|
||
|
|
|
||
|
|
ret = snd_pcm_new(sc, "Cobalt PCM-In HDMI",
|
||
|
|
0, /* PCM device 0, the only one for this card */
|
||
|
|
0, /* 0 playback substreams */
|
||
|
|
1, /* 1 capture substream */
|
||
|
|
&sp);
|
||
|
|
if (ret) {
|
||
|
|
cobalt_err("snd_cobalt_pcm_create() failed for input with err %d\n",
|
||
|
|
ret);
|
||
|
|
goto err_exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_pcm_set_ops(sp, SNDRV_PCM_STREAM_CAPTURE,
|
||
|
|
&snd_cobalt_pcm_capture_ops);
|
||
|
|
sp->info_flags = 0;
|
||
|
|
sp->private_data = cobsc;
|
||
|
|
strscpy(sp->name, "cobalt", sizeof(sp->name));
|
||
|
|
} else {
|
||
|
|
cobalt_s_bit_sysctrl(cobalt,
|
||
|
|
COBALT_SYS_CTRL_AUDIO_OPP_RESETN_BIT, 0);
|
||
|
|
mdelay(2);
|
||
|
|
cobalt_s_bit_sysctrl(cobalt,
|
||
|
|
COBALT_SYS_CTRL_AUDIO_OPP_RESETN_BIT, 1);
|
||
|
|
mdelay(1);
|
||
|
|
|
||
|
|
ret = snd_pcm_new(sc, "Cobalt PCM-Out HDMI",
|
||
|
|
0, /* PCM device 0, the only one for this card */
|
||
|
|
1, /* 0 playback substreams */
|
||
|
|
0, /* 1 capture substream */
|
||
|
|
&sp);
|
||
|
|
if (ret) {
|
||
|
|
cobalt_err("snd_cobalt_pcm_create() failed for output with err %d\n",
|
||
|
|
ret);
|
||
|
|
goto err_exit;
|
||
|
|
}
|
||
|
|
|
||
|
|
snd_pcm_set_ops(sp, SNDRV_PCM_STREAM_PLAYBACK,
|
||
|
|
&snd_cobalt_pcm_playback_ops);
|
||
|
|
sp->info_flags = 0;
|
||
|
|
sp->private_data = cobsc;
|
||
|
|
strscpy(sp->name, "cobalt", sizeof(sp->name));
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_exit:
|
||
|
|
return ret;
|
||
|
|
}
|