linux/sound/soc/intel/skylake/skl-pcm.c

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/*
* skl-pcm.c -ASoC HDA Platform driver file implementing PCM functionality
*
* Copyright (C) 2014-2015 Intel Corp
* Author: Jeeja KP <jeeja.kp@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
*/
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "skl.h"
#include "skl-topology.h"
#define HDA_MONO 1
#define HDA_STEREO 2
#define HDA_QUAD 4
static struct snd_pcm_hardware azx_pcm_hw = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_SYNC_START |
SNDRV_PCM_INFO_HAS_WALL_CLOCK | /* legacy */
SNDRV_PCM_INFO_HAS_LINK_ATIME |
SNDRV_PCM_INFO_NO_PERIOD_WAKEUP),
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S32_LE |
SNDRV_PCM_FMTBIT_S24_LE,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 |
SNDRV_PCM_RATE_8000,
.rate_min = 8000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = HDA_QUAD,
.buffer_bytes_max = AZX_MAX_BUF_SIZE,
.period_bytes_min = 128,
.period_bytes_max = AZX_MAX_BUF_SIZE / 2,
.periods_min = 2,
.periods_max = AZX_MAX_FRAG,
.fifo_size = 0,
};
static inline
struct hdac_ext_stream *get_hdac_ext_stream(struct snd_pcm_substream *substream)
{
return substream->runtime->private_data;
}
static struct hdac_ext_bus *get_bus_ctx(struct snd_pcm_substream *substream)
{
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
struct hdac_stream *hstream = hdac_stream(stream);
struct hdac_bus *bus = hstream->bus;
return hbus_to_ebus(bus);
}
static int skl_substream_alloc_pages(struct hdac_ext_bus *ebus,
struct snd_pcm_substream *substream,
size_t size)
{
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
hdac_stream(stream)->bufsize = 0;
hdac_stream(stream)->period_bytes = 0;
hdac_stream(stream)->format_val = 0;
return snd_pcm_lib_malloc_pages(substream, size);
}
static int skl_substream_free_pages(struct hdac_bus *bus,
struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static void skl_set_pcm_constrains(struct hdac_ext_bus *ebus,
struct snd_pcm_runtime *runtime)
{
snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
/* avoid wrap-around with wall-clock */
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_TIME,
20, 178000000);
}
static enum hdac_ext_stream_type skl_get_host_stream_type(struct hdac_ext_bus *ebus)
{
if (ebus->ppcap)
return HDAC_EXT_STREAM_TYPE_HOST;
else
return HDAC_EXT_STREAM_TYPE_COUPLED;
}
/*
* check if the stream opened is marked as ignore_suspend by machine, if so
* then enable suspend_active refcount
*
* The count supend_active does not need lock as it is used in open/close
* and suspend context
*/
static void skl_set_suspend_active(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai, bool enable)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct snd_soc_dapm_widget *w;
struct skl *skl = ebus_to_skl(ebus);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
w = dai->playback_widget;
else
w = dai->capture_widget;
if (w->ignore_suspend && enable)
skl->supend_active++;
else if (w->ignore_suspend && !enable)
skl->supend_active--;
}
static int skl_pcm_open(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *stream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct skl_dma_params *dma_params;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
stream = snd_hdac_ext_stream_assign(ebus, substream,
skl_get_host_stream_type(ebus));
if (stream == NULL)
return -EBUSY;
skl_set_pcm_constrains(ebus, runtime);
/*
* disable WALLCLOCK timestamps for capture streams
* until we figure out how to handle digital inputs
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; /* legacy */
runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_LINK_ATIME;
}
runtime->private_data = stream;
dma_params = kzalloc(sizeof(*dma_params), GFP_KERNEL);
if (!dma_params)
return -ENOMEM;
dma_params->stream_tag = hdac_stream(stream)->stream_tag;
snd_soc_dai_set_dma_data(dai, substream, dma_params);
dev_dbg(dai->dev, "stream tag set in dma params=%d\n",
dma_params->stream_tag);
skl_set_suspend_active(substream, dai, true);
snd_pcm_set_sync(substream);
return 0;
}
static int skl_get_format(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct skl_dma_params *dma_params;
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
int format_val = 0;
if (ebus->ppcap) {
struct snd_pcm_runtime *runtime = substream->runtime;
format_val = snd_hdac_calc_stream_format(runtime->rate,
runtime->channels,
runtime->format,
32, 0);
} else {
struct snd_soc_dai *codec_dai = rtd->codec_dai;
dma_params = snd_soc_dai_get_dma_data(codec_dai, substream);
if (dma_params)
format_val = dma_params->format;
}
return format_val;
}
static int skl_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
unsigned int format_val;
int err;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
format_val = skl_get_format(substream, dai);
dev_dbg(dai->dev, "stream_tag=%d formatvalue=%d\n",
hdac_stream(stream)->stream_tag, format_val);
snd_hdac_stream_reset(hdac_stream(stream));
err = snd_hdac_stream_set_params(hdac_stream(stream), format_val);
if (err < 0)
return err;
err = snd_hdac_stream_setup(hdac_stream(stream));
if (err < 0)
return err;
hdac_stream(stream)->prepared = 1;
return err;
}
static int skl_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct skl_pipe_params p_params = {0};
struct skl_module_cfg *m_cfg;
int ret, dma_id;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
ret = skl_substream_alloc_pages(ebus, substream,
params_buffer_bytes(params));
if (ret < 0)
return ret;
dev_dbg(dai->dev, "format_val, rate=%d, ch=%d, format=%d\n",
runtime->rate, runtime->channels, runtime->format);
dma_id = hdac_stream(stream)->stream_tag - 1;
dev_dbg(dai->dev, "dma_id=%d\n", dma_id);
p_params.s_fmt = snd_pcm_format_width(params_format(params));
p_params.ch = params_channels(params);
p_params.s_freq = params_rate(params);
p_params.host_dma_id = dma_id;
p_params.stream = substream->stream;
m_cfg = skl_tplg_fe_get_cpr_module(dai, p_params.stream);
if (m_cfg)
skl_tplg_update_pipe_params(dai->dev, m_cfg, &p_params);
return 0;
}
static void skl_pcm_close(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct skl_dma_params *dma_params = NULL;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
snd_hdac_ext_stream_release(stream, skl_get_host_stream_type(ebus));
dma_params = snd_soc_dai_get_dma_data(dai, substream);
/*
* now we should set this to NULL as we are freeing by the
* dma_params
*/
snd_soc_dai_set_dma_data(dai, substream, NULL);
skl_set_suspend_active(substream, dai, false);
kfree(dma_params);
}
static int skl_pcm_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
snd_hdac_stream_cleanup(hdac_stream(stream));
hdac_stream(stream)->prepared = 0;
return skl_substream_free_pages(ebus_to_hbus(ebus), substream);
}
static int skl_be_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct skl_pipe_params p_params = {0};
p_params.s_fmt = snd_pcm_format_width(params_format(params));
p_params.ch = params_channels(params);
p_params.s_freq = params_rate(params);
p_params.stream = substream->stream;
return skl_tplg_be_update_params(dai, &p_params);
}
static int skl_decoupled_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct hdac_ext_bus *ebus = get_bus_ctx(substream);
struct hdac_bus *bus = ebus_to_hbus(ebus);
struct hdac_ext_stream *stream;
int start;
unsigned long cookie;
struct hdac_stream *hstr;
stream = get_hdac_ext_stream(substream);
hstr = hdac_stream(stream);
if (!hstr->prepared)
return -EPIPE;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
start = 1;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
start = 0;
break;
default:
return -EINVAL;
}
spin_lock_irqsave(&bus->reg_lock, cookie);
if (start) {
snd_hdac_stream_start(hdac_stream(stream), true);
snd_hdac_stream_timecounter_init(hstr, 0);
} else {
snd_hdac_stream_stop(hdac_stream(stream));
}
spin_unlock_irqrestore(&bus->reg_lock, cookie);
return 0;
}
static int skl_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct skl *skl = get_skl_ctx(dai->dev);
struct skl_sst *ctx = skl->skl_sst;
struct skl_module_cfg *mconfig;
struct hdac_ext_bus *ebus = get_bus_ctx(substream);
struct hdac_ext_stream *stream = get_hdac_ext_stream(substream);
int ret;
mconfig = skl_tplg_fe_get_cpr_module(dai, substream->stream);
if (!mconfig)
return -EIO;
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
skl_pcm_prepare(substream, dai);
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
/*
* Start HOST DMA and Start FE Pipe.This is to make sure that
* there are no underrun/overrun in the case when the FE
* pipeline is started but there is a delay in starting the
* DMA channel on the host.
*/
snd_hdac_ext_stream_decouple(ebus, stream, true);
ret = skl_decoupled_trigger(substream, cmd);
if (ret < 0)
return ret;
return skl_run_pipe(ctx, mconfig->pipe);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
/*
* Stop FE Pipe first and stop DMA. This is to make sure that
* there are no underrun/overrun in the case if there is a delay
* between the two operations.
*/
ret = skl_stop_pipe(ctx, mconfig->pipe);
if (ret < 0)
return ret;
ret = skl_decoupled_trigger(substream, cmd);
if (cmd == SNDRV_PCM_TRIGGER_SUSPEND)
snd_hdac_ext_stream_decouple(ebus, stream, false);
break;
default:
return -EINVAL;
}
return 0;
}
static int skl_link_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *link_dev;
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct skl_dma_params *dma_params;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct skl_pipe_params p_params = {0};
link_dev = snd_hdac_ext_stream_assign(ebus, substream,
HDAC_EXT_STREAM_TYPE_LINK);
if (!link_dev)
return -EBUSY;
snd_soc_dai_set_dma_data(dai, substream, (void *)link_dev);
/* set the stream tag in the codec dai dma params */
dma_params = (struct skl_dma_params *)
snd_soc_dai_get_dma_data(codec_dai, substream);
if (dma_params)
dma_params->stream_tag = hdac_stream(link_dev)->stream_tag;
snd_soc_dai_set_dma_data(codec_dai, substream, (void *)dma_params);
p_params.s_fmt = snd_pcm_format_width(params_format(params));
p_params.ch = params_channels(params);
p_params.s_freq = params_rate(params);
p_params.stream = substream->stream;
p_params.link_dma_id = hdac_stream(link_dev)->stream_tag - 1;
return skl_tplg_be_update_params(dai, &p_params);
}
static int skl_link_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct hdac_ext_stream *link_dev =
snd_soc_dai_get_dma_data(dai, substream);
unsigned int format_val = 0;
struct skl_dma_params *dma_params;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct hdac_ext_link *link;
if (link_dev->link_prepared) {
dev_dbg(dai->dev, "already stream is prepared - returning\n");
return 0;
}
dma_params = (struct skl_dma_params *)
snd_soc_dai_get_dma_data(codec_dai, substream);
if (dma_params)
format_val = dma_params->format;
dev_dbg(dai->dev, "stream_tag=%d formatvalue=%d codec_dai_name=%s\n",
hdac_stream(link_dev)->stream_tag, format_val, codec_dai->name);
snd_hdac_ext_link_stream_reset(link_dev);
snd_hdac_ext_link_stream_setup(link_dev, format_val);
link = snd_hdac_ext_bus_get_link(ebus, rtd->codec->component.name);
if (!link)
return -EINVAL;
snd_hdac_ext_link_set_stream_id(link, hdac_stream(link_dev)->stream_tag);
link_dev->link_prepared = 1;
return 0;
}
static int skl_link_pcm_trigger(struct snd_pcm_substream *substream,
int cmd, struct snd_soc_dai *dai)
{
struct hdac_ext_stream *link_dev =
snd_soc_dai_get_dma_data(dai, substream);
dev_dbg(dai->dev, "In %s cmd=%d\n", __func__, cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
snd_hdac_ext_link_stream_start(link_dev);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
snd_hdac_ext_link_stream_clear(link_dev);
break;
default:
return -EINVAL;
}
return 0;
}
static int skl_link_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct hdac_ext_stream *link_dev =
snd_soc_dai_get_dma_data(dai, substream);
struct hdac_ext_link *link;
dev_dbg(dai->dev, "%s: %s\n", __func__, dai->name);
link_dev->link_prepared = 0;
link = snd_hdac_ext_bus_get_link(ebus, rtd->codec->component.name);
if (!link)
return -EINVAL;
snd_hdac_ext_link_clear_stream_id(link, hdac_stream(link_dev)->stream_tag);
snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK);
return 0;
}
static struct snd_soc_dai_ops skl_pcm_dai_ops = {
.startup = skl_pcm_open,
.shutdown = skl_pcm_close,
.prepare = skl_pcm_prepare,
.hw_params = skl_pcm_hw_params,
.hw_free = skl_pcm_hw_free,
.trigger = skl_pcm_trigger,
};
static struct snd_soc_dai_ops skl_dmic_dai_ops = {
.hw_params = skl_be_hw_params,
};
static struct snd_soc_dai_ops skl_be_ssp_dai_ops = {
.hw_params = skl_be_hw_params,
};
static struct snd_soc_dai_ops skl_link_dai_ops = {
.prepare = skl_link_pcm_prepare,
.hw_params = skl_link_hw_params,
.hw_free = skl_link_hw_free,
.trigger = skl_link_pcm_trigger,
};
static struct snd_soc_dai_driver skl_platform_dai[] = {
{
.name = "System Pin",
.ops = &skl_pcm_dai_ops,
.playback = {
.stream_name = "System Playback",
.channels_min = HDA_MONO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_8000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
.capture = {
.stream_name = "System Capture",
.channels_min = HDA_MONO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
{
.name = "Reference Pin",
.ops = &skl_pcm_dai_ops,
.capture = {
.stream_name = "Reference Capture",
.channels_min = HDA_MONO,
.channels_max = HDA_QUAD,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
{
.name = "Deepbuffer Pin",
.ops = &skl_pcm_dai_ops,
.playback = {
.stream_name = "Deepbuffer Playback",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
{
.name = "LowLatency Pin",
.ops = &skl_pcm_dai_ops,
.playback = {
.stream_name = "Low Latency Playback",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
{
.name = "DMIC Pin",
.ops = &skl_pcm_dai_ops,
.capture = {
.stream_name = "DMIC Capture",
.channels_min = HDA_MONO,
.channels_max = HDA_QUAD,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
/* BE CPU Dais */
{
.name = "SSP0 Pin",
.ops = &skl_be_ssp_dai_ops,
.playback = {
.stream_name = "ssp0 Tx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "ssp0 Rx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "SSP1 Pin",
.ops = &skl_be_ssp_dai_ops,
.playback = {
.stream_name = "ssp1 Tx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "ssp1 Rx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "iDisp Pin",
.ops = &skl_link_dai_ops,
.playback = {
.stream_name = "iDisp Tx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
.name = "DMIC01 Pin",
.ops = &skl_dmic_dai_ops,
.capture = {
.stream_name = "DMIC01 Rx",
.channels_min = HDA_MONO,
.channels_max = HDA_QUAD,
.rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_16000,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
},
},
{
.name = "HD-Codec Pin",
.ops = &skl_link_dai_ops,
.playback = {
.stream_name = "HD-Codec Tx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "HD-Codec Rx",
.channels_min = HDA_STEREO,
.channels_max = HDA_STEREO,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static int skl_platform_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai_link *dai_link = rtd->dai_link;
dev_dbg(rtd->cpu_dai->dev, "In %s:%s\n", __func__,
dai_link->cpu_dai_name);
runtime = substream->runtime;
snd_soc_set_runtime_hwparams(substream, &azx_pcm_hw);
return 0;
}
static int skl_coupled_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct hdac_ext_bus *ebus = get_bus_ctx(substream);
struct hdac_bus *bus = ebus_to_hbus(ebus);
struct hdac_ext_stream *stream;
struct snd_pcm_substream *s;
bool start;
int sbits = 0;
unsigned long cookie;
struct hdac_stream *hstr;
stream = get_hdac_ext_stream(substream);
hstr = hdac_stream(stream);
dev_dbg(bus->dev, "In %s cmd=%d\n", __func__, cmd);
if (!hstr->prepared)
return -EPIPE;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
start = true;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
start = false;
break;
default:
return -EINVAL;
}
snd_pcm_group_for_each_entry(s, substream) {
if (s->pcm->card != substream->pcm->card)
continue;
stream = get_hdac_ext_stream(s);
sbits |= 1 << hdac_stream(stream)->index;
snd_pcm_trigger_done(s, substream);
}
spin_lock_irqsave(&bus->reg_lock, cookie);
/* first, set SYNC bits of corresponding streams */
snd_hdac_stream_sync_trigger(hstr, true, sbits, AZX_REG_SSYNC);
snd_pcm_group_for_each_entry(s, substream) {
if (s->pcm->card != substream->pcm->card)
continue;
stream = get_hdac_ext_stream(s);
if (start)
snd_hdac_stream_start(hdac_stream(stream), true);
else
snd_hdac_stream_stop(hdac_stream(stream));
}
spin_unlock_irqrestore(&bus->reg_lock, cookie);
snd_hdac_stream_sync(hstr, start, sbits);
spin_lock_irqsave(&bus->reg_lock, cookie);
/* reset SYNC bits */
snd_hdac_stream_sync_trigger(hstr, false, sbits, AZX_REG_SSYNC);
if (start)
snd_hdac_stream_timecounter_init(hstr, sbits);
spin_unlock_irqrestore(&bus->reg_lock, cookie);
return 0;
}
static int skl_platform_pcm_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct hdac_ext_bus *ebus = get_bus_ctx(substream);
if (!ebus->ppcap)
return skl_coupled_trigger(substream, cmd);
return 0;
}
/* calculate runtime delay from LPIB */
static int skl_get_delay_from_lpib(struct hdac_ext_bus *ebus,
struct hdac_ext_stream *sstream,
unsigned int pos)
{
struct hdac_bus *bus = ebus_to_hbus(ebus);
struct hdac_stream *hstream = hdac_stream(sstream);
struct snd_pcm_substream *substream = hstream->substream;
int stream = substream->stream;
unsigned int lpib_pos = snd_hdac_stream_get_pos_lpib(hstream);
int delay;
if (stream == SNDRV_PCM_STREAM_PLAYBACK)
delay = pos - lpib_pos;
else
delay = lpib_pos - pos;
if (delay < 0) {
if (delay >= hstream->delay_negative_threshold)
delay = 0;
else
delay += hstream->bufsize;
}
if (delay >= hstream->period_bytes) {
dev_info(bus->dev,
"Unstable LPIB (%d >= %d); disabling LPIB delay counting\n",
delay, hstream->period_bytes);
delay = 0;
}
return bytes_to_frames(substream->runtime, delay);
}
static unsigned int skl_get_position(struct hdac_ext_stream *hstream,
int codec_delay)
{
struct hdac_stream *hstr = hdac_stream(hstream);
struct snd_pcm_substream *substream = hstr->substream;
struct hdac_ext_bus *ebus;
unsigned int pos;
int delay;
/* use the position buffer as default */
pos = snd_hdac_stream_get_pos_posbuf(hdac_stream(hstream));
if (pos >= hdac_stream(hstream)->bufsize)
pos = 0;
if (substream->runtime) {
ebus = get_bus_ctx(substream);
delay = skl_get_delay_from_lpib(ebus, hstream, pos)
+ codec_delay;
substream->runtime->delay += delay;
}
return pos;
}
static snd_pcm_uframes_t skl_platform_pcm_pointer
(struct snd_pcm_substream *substream)
{
struct hdac_ext_stream *hstream = get_hdac_ext_stream(substream);
return bytes_to_frames(substream->runtime,
skl_get_position(hstream, 0));
}
static u64 skl_adjust_codec_delay(struct snd_pcm_substream *substream,
u64 nsec)
{
struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);
struct snd_soc_dai *codec_dai = rtd->codec_dai;
u64 codec_frames, codec_nsecs;
if (!codec_dai->driver->ops->delay)
return nsec;
codec_frames = codec_dai->driver->ops->delay(substream, codec_dai);
codec_nsecs = div_u64(codec_frames * 1000000000LL,
substream->runtime->rate);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
return nsec + codec_nsecs;
return (nsec > codec_nsecs) ? nsec - codec_nsecs : 0;
}
static int skl_get_time_info(struct snd_pcm_substream *substream,
struct timespec *system_ts, struct timespec *audio_ts,
struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
struct snd_pcm_audio_tstamp_report *audio_tstamp_report)
{
struct hdac_ext_stream *sstream = get_hdac_ext_stream(substream);
struct hdac_stream *hstr = hdac_stream(sstream);
u64 nsec;
if ((substream->runtime->hw.info & SNDRV_PCM_INFO_HAS_LINK_ATIME) &&
(audio_tstamp_config->type_requested == SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK)) {
snd_pcm_gettime(substream->runtime, system_ts);
nsec = timecounter_read(&hstr->tc);
nsec = div_u64(nsec, 3); /* can be optimized */
if (audio_tstamp_config->report_delay)
nsec = skl_adjust_codec_delay(substream, nsec);
*audio_ts = ns_to_timespec(nsec);
audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK;
audio_tstamp_report->accuracy_report = 1; /* rest of struct is valid */
audio_tstamp_report->accuracy = 42; /* 24MHzWallClk == 42ns resolution */
} else {
audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT;
}
return 0;
}
static struct snd_pcm_ops skl_platform_ops = {
.open = skl_platform_open,
.ioctl = snd_pcm_lib_ioctl,
.trigger = skl_platform_pcm_trigger,
.pointer = skl_platform_pcm_pointer,
.get_time_info = skl_get_time_info,
.mmap = snd_pcm_lib_default_mmap,
.page = snd_pcm_sgbuf_ops_page,
};
static void skl_pcm_free(struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_free_for_all(pcm);
}
#define MAX_PREALLOC_SIZE (32 * 1024 * 1024)
static int skl_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *dai = rtd->cpu_dai;
struct hdac_ext_bus *ebus = dev_get_drvdata(dai->dev);
struct snd_pcm *pcm = rtd->pcm;
unsigned int size;
int retval = 0;
struct skl *skl = ebus_to_skl(ebus);
if (dai->driver->playback.channels_min ||
dai->driver->capture.channels_min) {
/* buffer pre-allocation */
size = CONFIG_SND_HDA_PREALLOC_SIZE * 1024;
if (size > MAX_PREALLOC_SIZE)
size = MAX_PREALLOC_SIZE;
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_DEV_SG,
snd_dma_pci_data(skl->pci),
size, MAX_PREALLOC_SIZE);
if (retval) {
dev_err(dai->dev, "dma buffer allocationf fail\n");
return retval;
}
}
return retval;
}
static int skl_platform_soc_probe(struct snd_soc_platform *platform)
{
struct hdac_ext_bus *ebus = dev_get_drvdata(platform->dev);
if (ebus->ppcap)
return skl_tplg_init(platform, ebus);
return 0;
}
static struct snd_soc_platform_driver skl_platform_drv = {
.probe = skl_platform_soc_probe,
.ops = &skl_platform_ops,
.pcm_new = skl_pcm_new,
.pcm_free = skl_pcm_free,
};
static const struct snd_soc_component_driver skl_component = {
.name = "pcm",
};
int skl_platform_register(struct device *dev)
{
int ret;
struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
struct skl *skl = ebus_to_skl(ebus);
INIT_LIST_HEAD(&skl->ppl_list);
ret = snd_soc_register_platform(dev, &skl_platform_drv);
if (ret) {
dev_err(dev, "soc platform registration failed %d\n", ret);
return ret;
}
ret = snd_soc_register_component(dev, &skl_component,
skl_platform_dai,
ARRAY_SIZE(skl_platform_dai));
if (ret) {
dev_err(dev, "soc component registration failed %d\n", ret);
snd_soc_unregister_platform(dev);
}
return ret;
}
int skl_platform_unregister(struct device *dev)
{
snd_soc_unregister_component(dev);
snd_soc_unregister_platform(dev);
return 0;
}