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ubuntu-linux-kernel/sound/soc/intel/haswell/sst-haswell-pcm.c

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2024-04-01 15:06:58 +00:00
/*
* Intel SST Haswell/Broadwell PCM Support
*
* Copyright (C) 2013, Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 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.
*
*/
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/compress_driver.h>
#include "../haswell/sst-haswell-ipc.h"
#include "../common/sst-dsp-priv.h"
#include "../common/sst-dsp.h"
#define HSW_PCM_COUNT 6
#define HSW_VOLUME_MAX 0x7FFFFFFF /* 0dB */
#define SST_OLD_POSITION(d, r, o) ((d) + \
frames_to_bytes(r, o))
#define SST_SAMPLES(r, x) (bytes_to_samples(r, \
frames_to_bytes(r, (x))))
/* simple volume table */
static const u32 volume_map[] = {
HSW_VOLUME_MAX >> 30,
HSW_VOLUME_MAX >> 29,
HSW_VOLUME_MAX >> 28,
HSW_VOLUME_MAX >> 27,
HSW_VOLUME_MAX >> 26,
HSW_VOLUME_MAX >> 25,
HSW_VOLUME_MAX >> 24,
HSW_VOLUME_MAX >> 23,
HSW_VOLUME_MAX >> 22,
HSW_VOLUME_MAX >> 21,
HSW_VOLUME_MAX >> 20,
HSW_VOLUME_MAX >> 19,
HSW_VOLUME_MAX >> 18,
HSW_VOLUME_MAX >> 17,
HSW_VOLUME_MAX >> 16,
HSW_VOLUME_MAX >> 15,
HSW_VOLUME_MAX >> 14,
HSW_VOLUME_MAX >> 13,
HSW_VOLUME_MAX >> 12,
HSW_VOLUME_MAX >> 11,
HSW_VOLUME_MAX >> 10,
HSW_VOLUME_MAX >> 9,
HSW_VOLUME_MAX >> 8,
HSW_VOLUME_MAX >> 7,
HSW_VOLUME_MAX >> 6,
HSW_VOLUME_MAX >> 5,
HSW_VOLUME_MAX >> 4,
HSW_VOLUME_MAX >> 3,
HSW_VOLUME_MAX >> 2,
HSW_VOLUME_MAX >> 1,
HSW_VOLUME_MAX >> 0,
};
#define HSW_PCM_PERIODS_MAX 64
#define HSW_PCM_PERIODS_MIN 2
#define HSW_PCM_DAI_ID_SYSTEM 0
#define HSW_PCM_DAI_ID_OFFLOAD0 1
#define HSW_PCM_DAI_ID_OFFLOAD1 2
#define HSW_PCM_DAI_ID_LOOPBACK 3
static const struct snd_pcm_hardware hsw_pcm_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |
SNDRV_PCM_INFO_DRAIN_TRIGGER,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
SNDRV_PCM_FMTBIT_S32_LE,
.period_bytes_min = PAGE_SIZE,
.period_bytes_max = (HSW_PCM_PERIODS_MAX / HSW_PCM_PERIODS_MIN) * PAGE_SIZE,
.periods_min = HSW_PCM_PERIODS_MIN,
.periods_max = HSW_PCM_PERIODS_MAX,
.buffer_bytes_max = HSW_PCM_PERIODS_MAX * PAGE_SIZE,
};
struct hsw_pcm_module_map {
int dai_id;
int stream;
enum sst_hsw_module_id mod_id;
};
/* private data for each PCM DSP stream */
struct hsw_pcm_data {
int dai_id;
struct sst_hsw_stream *stream;
struct sst_module_runtime *runtime;
struct sst_module_runtime_context context;
struct snd_pcm *hsw_pcm;
u32 volume[2];
struct snd_pcm_substream *substream;
struct snd_compr_stream *cstream;
unsigned int wpos;
struct mutex mutex;
bool allocated;
int persistent_offset;
};
enum hsw_pm_state {
HSW_PM_STATE_D0 = 0,
HSW_PM_STATE_RTD3 = 1,
HSW_PM_STATE_D3 = 2,
};
/* private data for the driver */
struct hsw_priv_data {
/* runtime DSP */
struct sst_hsw *hsw;
struct device *dev;
enum hsw_pm_state pm_state;
struct snd_soc_card *soc_card;
struct sst_module_runtime *runtime_waves; /* sound effect module */
/* page tables */
struct snd_dma_buffer dmab[HSW_PCM_COUNT][2];
/* DAI data */
struct hsw_pcm_data pcm[HSW_PCM_COUNT][2];
};
/* static mappings between PCMs and modules - may be dynamic in future */
static struct hsw_pcm_module_map mod_map[] = {
{HSW_PCM_DAI_ID_SYSTEM, 0, SST_HSW_MODULE_PCM_SYSTEM},
{HSW_PCM_DAI_ID_OFFLOAD0, 0, SST_HSW_MODULE_PCM},
{HSW_PCM_DAI_ID_OFFLOAD1, 0, SST_HSW_MODULE_PCM},
{HSW_PCM_DAI_ID_LOOPBACK, 1, SST_HSW_MODULE_PCM_REFERENCE},
{HSW_PCM_DAI_ID_SYSTEM, 1, SST_HSW_MODULE_PCM_CAPTURE},
};
static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data);
static inline u32 hsw_mixer_to_ipc(unsigned int value)
{
if (value >= ARRAY_SIZE(volume_map))
return volume_map[0];
else
return volume_map[value];
}
static inline unsigned int hsw_ipc_to_mixer(u32 value)
{
int i;
for (i = 0; i < ARRAY_SIZE(volume_map); i++) {
if (volume_map[i] >= value)
return i;
}
return i - 1;
}
static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
int dai, stream;
dai = mod_map[mc->reg].dai_id;
stream = mod_map[mc->reg].stream;
pcm_data = &pdata->pcm[dai][stream];
mutex_lock(&pcm_data->mutex);
pm_runtime_get_sync(pdata->dev);
if (!pcm_data->stream) {
pcm_data->volume[0] =
hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
pcm_data->volume[1] =
hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return 0;
}
if (ucontrol->value.integer.value[0] ==
ucontrol->value.integer.value[1]) {
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
/* apply volume value to all channels */
sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, SST_HSW_CHANNELS_ALL, volume);
} else {
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 0, volume);
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 1, volume);
}
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return 0;
}
static int hsw_stream_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct soc_mixer_control *mc =
(struct soc_mixer_control *)kcontrol->private_value;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
int dai, stream;
dai = mod_map[mc->reg].dai_id;
stream = mod_map[mc->reg].stream;
pcm_data = &pdata->pcm[dai][stream];
mutex_lock(&pcm_data->mutex);
pm_runtime_get_sync(pdata->dev);
if (!pcm_data->stream) {
ucontrol->value.integer.value[0] =
hsw_ipc_to_mixer(pcm_data->volume[0]);
ucontrol->value.integer.value[1] =
hsw_ipc_to_mixer(pcm_data->volume[1]);
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return 0;
}
sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 0, &volume);
ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 1, &volume);
ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return 0;
}
static int hsw_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
pm_runtime_get_sync(pdata->dev);
if (ucontrol->value.integer.value[0] ==
ucontrol->value.integer.value[1]) {
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
sst_hsw_mixer_set_volume(hsw, 0, SST_HSW_CHANNELS_ALL, volume);
} else {
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
sst_hsw_mixer_set_volume(hsw, 0, 0, volume);
volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
sst_hsw_mixer_set_volume(hsw, 0, 1, volume);
}
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
return 0;
}
static int hsw_volume_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
unsigned int volume = 0;
pm_runtime_get_sync(pdata->dev);
sst_hsw_mixer_get_volume(hsw, 0, 0, &volume);
ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
sst_hsw_mixer_get_volume(hsw, 0, 1, &volume);
ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
return 0;
}
static int hsw_waves_switch_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
enum sst_hsw_module_id id = SST_HSW_MODULE_WAVES;
ucontrol->value.integer.value[0] =
(sst_hsw_is_module_active(hsw, id) ||
sst_hsw_is_module_enabled_rtd3(hsw, id));
return 0;
}
static int hsw_waves_switch_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
int ret = 0;
enum sst_hsw_module_id id = SST_HSW_MODULE_WAVES;
bool switch_on = (bool)ucontrol->value.integer.value[0];
/* if module is in RAM on the DSP, apply user settings to module through
* ipc. If module is not in RAM on the DSP, store user setting for
* track */
if (sst_hsw_is_module_loaded(hsw, id)) {
if (switch_on == sst_hsw_is_module_active(hsw, id))
return 0;
if (switch_on)
ret = sst_hsw_module_enable(hsw, id, 0);
else
ret = sst_hsw_module_disable(hsw, id, 0);
} else {
if (switch_on == sst_hsw_is_module_enabled_rtd3(hsw, id))
return 0;
if (switch_on)
sst_hsw_set_module_enabled_rtd3(hsw, id);
else
sst_hsw_set_module_disabled_rtd3(hsw, id);
}
return ret;
}
static int hsw_waves_param_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
/* return a matching line from param buffer */
return sst_hsw_load_param_line(hsw, ucontrol->value.bytes.data);
}
static int hsw_waves_param_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
struct sst_hsw *hsw = pdata->hsw;
int ret;
enum sst_hsw_module_id id = SST_HSW_MODULE_WAVES;
int param_id = ucontrol->value.bytes.data[0];
int param_size = WAVES_PARAM_COUNT;
/* clear param buffer and reset buffer index */
if (param_id == 0xFF) {
sst_hsw_reset_param_buf(hsw);
return 0;
}
/* store params into buffer */
ret = sst_hsw_store_param_line(hsw, ucontrol->value.bytes.data);
if (ret < 0)
return ret;
if (sst_hsw_is_module_active(hsw, id))
ret = sst_hsw_module_set_param(hsw, id, 0, param_id,
param_size, ucontrol->value.bytes.data);
return ret;
}
/* TLV used by both global and stream volumes */
static const DECLARE_TLV_DB_SCALE(hsw_vol_tlv, -9000, 300, 1);
/* System Pin has no volume control */
static const struct snd_kcontrol_new hsw_volume_controls[] = {
/* Global DSP volume */
SOC_DOUBLE_EXT_TLV("Master Playback Volume", 0, 0, 8,
ARRAY_SIZE(volume_map) - 1, 0,
hsw_volume_get, hsw_volume_put, hsw_vol_tlv),
/* Offload 0 volume */
SOC_DOUBLE_EXT_TLV("Media0 Playback Volume", 1, 0, 8,
ARRAY_SIZE(volume_map) - 1, 0,
hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
/* Offload 1 volume */
SOC_DOUBLE_EXT_TLV("Media1 Playback Volume", 2, 0, 8,
ARRAY_SIZE(volume_map) - 1, 0,
hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
/* Mic Capture volume */
SOC_DOUBLE_EXT_TLV("Mic Capture Volume", 4, 0, 8,
ARRAY_SIZE(volume_map) - 1, 0,
hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
/* enable/disable module waves */
SOC_SINGLE_BOOL_EXT("Waves Switch", 0,
hsw_waves_switch_get, hsw_waves_switch_put),
/* set parameters to module waves */
SND_SOC_BYTES_EXT("Waves Set Param", WAVES_PARAM_COUNT,
hsw_waves_param_get, hsw_waves_param_put),
};
/* Create DMA buffer page table for DSP */
static int create_adsp_page_table(struct snd_pcm_substream *substream,
struct hsw_priv_data *pdata, struct snd_soc_pcm_runtime *rtd,
unsigned char *dma_area, size_t size, int pcm)
{
struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream);
int i, pages, stream = substream->stream;
pages = snd_sgbuf_aligned_pages(size);
dev_dbg(rtd->dev, "generating page table for %p size 0x%zx pages %d\n",
dma_area, size, pages);
for (i = 0; i < pages; i++) {
u32 idx = (((i << 2) + i)) >> 1;
u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT;
u32 *pg_table;
dev_dbg(rtd->dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn);
pg_table = (u32 *)(pdata->dmab[pcm][stream].area + idx);
if (i & 1)
*pg_table |= (pfn << 4);
else
*pg_table |= pfn;
}
return 0;
}
/* this may get called several times by oss emulation */
static int hsw_pcm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
struct sst_module *module_data;
struct sst_dsp *dsp;
struct snd_dma_buffer *dmab;
enum sst_hsw_stream_type stream_type;
enum sst_hsw_stream_path_id path_id;
u32 rate, bits, map, pages, module_id;
u8 channels;
int ret, dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
/* check if we are being called a subsequent time */
if (pcm_data->allocated) {
ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
if (ret < 0)
dev_dbg(rtd->dev, "error: reset stream failed %d\n",
ret);
ret = sst_hsw_stream_free(hsw, pcm_data->stream);
if (ret < 0) {
dev_dbg(rtd->dev, "error: free stream failed %d\n",
ret);
return ret;
}
pcm_data->allocated = false;
pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
hsw_notify_pointer, pcm_data);
if (pcm_data->stream == NULL) {
dev_err(rtd->dev, "error: failed to create stream\n");
return -EINVAL;
}
}
/* stream direction */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
else
path_id = SST_HSW_STREAM_PATH_SSP0_IN;
/* DSP stream type depends on DAI ID */
switch (rtd->cpu_dai->id) {
case 0:
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
stream_type = SST_HSW_STREAM_TYPE_SYSTEM;
module_id = SST_HSW_MODULE_PCM_SYSTEM;
}
else {
stream_type = SST_HSW_STREAM_TYPE_CAPTURE;
module_id = SST_HSW_MODULE_PCM_CAPTURE;
}
break;
case 1:
case 2:
stream_type = SST_HSW_STREAM_TYPE_RENDER;
module_id = SST_HSW_MODULE_PCM;
break;
case 3:
/* path ID needs to be OUT for loopback */
stream_type = SST_HSW_STREAM_TYPE_LOOPBACK;
path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
module_id = SST_HSW_MODULE_PCM_REFERENCE;
break;
default:
dev_err(rtd->dev, "error: invalid DAI ID %d\n",
rtd->cpu_dai->id);
return -EINVAL;
};
ret = sst_hsw_stream_format(hsw, pcm_data->stream,
path_id, stream_type, SST_HSW_STREAM_FORMAT_PCM_FORMAT);
if (ret < 0) {
dev_err(rtd->dev, "error: failed to set format %d\n", ret);
return ret;
}
rate = params_rate(params);
ret = sst_hsw_stream_set_rate(hsw, pcm_data->stream, rate);
if (ret < 0) {
dev_err(rtd->dev, "error: could not set rate %d\n", rate);
return ret;
}
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
bits = SST_HSW_DEPTH_16BIT;
sst_hsw_stream_set_valid(hsw, pcm_data->stream, 16);
break;
case SNDRV_PCM_FORMAT_S24_LE:
bits = SST_HSW_DEPTH_32BIT;
sst_hsw_stream_set_valid(hsw, pcm_data->stream, 24);
break;
case SNDRV_PCM_FORMAT_S8:
bits = SST_HSW_DEPTH_8BIT;
sst_hsw_stream_set_valid(hsw, pcm_data->stream, 8);
break;
case SNDRV_PCM_FORMAT_S32_LE:
bits = SST_HSW_DEPTH_32BIT;
sst_hsw_stream_set_valid(hsw, pcm_data->stream, 32);
break;
default:
dev_err(rtd->dev, "error: invalid format %d\n",
params_format(params));
return -EINVAL;
}
ret = sst_hsw_stream_set_bits(hsw, pcm_data->stream, bits);
if (ret < 0) {
dev_err(rtd->dev, "error: could not set bits %d\n", bits);
return ret;
}
channels = params_channels(params);
map = create_channel_map(SST_HSW_CHANNEL_CONFIG_STEREO);
sst_hsw_stream_set_map_config(hsw, pcm_data->stream,
map, SST_HSW_CHANNEL_CONFIG_STEREO);
ret = sst_hsw_stream_set_channels(hsw, pcm_data->stream, channels);
if (ret < 0) {
dev_err(rtd->dev, "error: could not set channels %d\n",
channels);
return ret;
}
ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
if (ret < 0) {
dev_err(rtd->dev, "error: could not allocate %d bytes for PCM %d\n",
params_buffer_bytes(params), ret);
return ret;
}
dmab = snd_pcm_get_dma_buf(substream);
ret = create_adsp_page_table(substream, pdata, rtd, runtime->dma_area,
runtime->dma_bytes, rtd->cpu_dai->id);
if (ret < 0)
return ret;
sst_hsw_stream_set_style(hsw, pcm_data->stream,
SST_HSW_INTERLEAVING_PER_CHANNEL);
if (runtime->dma_bytes % PAGE_SIZE)
pages = (runtime->dma_bytes / PAGE_SIZE) + 1;
else
pages = runtime->dma_bytes / PAGE_SIZE;
ret = sst_hsw_stream_buffer(hsw, pcm_data->stream,
pdata->dmab[rtd->cpu_dai->id][substream->stream].addr,
pages, runtime->dma_bytes, 0,
snd_sgbuf_get_addr(dmab, 0) >> PAGE_SHIFT);
if (ret < 0) {
dev_err(rtd->dev, "error: failed to set DMA buffer %d\n", ret);
return ret;
}
dsp = sst_hsw_get_dsp(hsw);
module_data = sst_module_get_from_id(dsp, module_id);
if (module_data == NULL) {
dev_err(rtd->dev, "error: failed to get module config\n");
return -EINVAL;
}
sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
pcm_data->runtime);
ret = sst_hsw_stream_commit(hsw, pcm_data->stream);
if (ret < 0) {
dev_err(rtd->dev, "error: failed to commit stream %d\n", ret);
return ret;
}
if (!pcm_data->allocated) {
/* Set previous saved volume */
sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
0, pcm_data->volume[0]);
sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
1, pcm_data->volume[1]);
pcm_data->allocated = true;
}
ret = sst_hsw_stream_pause(hsw, pcm_data->stream, 1);
if (ret < 0)
dev_err(rtd->dev, "error: failed to pause %d\n", ret);
return 0;
}
static int hsw_pcm_hw_free(struct snd_pcm_substream *substream)
{
snd_pcm_lib_free_pages(substream);
return 0;
}
static int hsw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw_stream *sst_stream;
struct sst_hsw *hsw = pdata->hsw;
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_uframes_t pos;
int dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
sst_stream = pcm_data->stream;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
sst_hsw_stream_set_silence_start(hsw, sst_stream, false);
sst_hsw_stream_resume(hsw, pcm_data->stream, 0);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
sst_hsw_stream_set_silence_start(hsw, sst_stream, false);
sst_hsw_stream_pause(hsw, pcm_data->stream, 0);
break;
case SNDRV_PCM_TRIGGER_DRAIN:
pos = runtime->control->appl_ptr % runtime->buffer_size;
sst_hsw_stream_set_old_position(hsw, pcm_data->stream, pos);
sst_hsw_stream_set_silence_start(hsw, sst_stream, true);
break;
default:
break;
}
return 0;
}
static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data)
{
struct hsw_pcm_data *pcm_data = data;
struct snd_pcm_substream *substream = pcm_data->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct sst_hsw *hsw = pdata->hsw;
u32 pos;
snd_pcm_uframes_t position = bytes_to_frames(runtime,
sst_hsw_get_dsp_position(hsw, pcm_data->stream));
unsigned char *dma_area = runtime->dma_area;
snd_pcm_uframes_t dma_frames =
bytes_to_frames(runtime, runtime->dma_bytes);
snd_pcm_uframes_t old_position;
ssize_t samples;
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr % runtime->buffer_size));
dev_vdbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
/* SST fw don't know where to stop dma
* So, SST driver need to clean the data which has been consumed
*/
if (dma_area == NULL || dma_frames <= 0
|| (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|| !sst_hsw_stream_get_silence_start(hsw, stream)) {
snd_pcm_period_elapsed(substream);
return pos;
}
old_position = sst_hsw_stream_get_old_position(hsw, stream);
if (position > old_position) {
if (position < dma_frames) {
samples = SST_SAMPLES(runtime, position - old_position);
snd_pcm_format_set_silence(runtime->format,
SST_OLD_POSITION(dma_area,
runtime, old_position),
samples);
} else
dev_err(rtd->dev, "PCM: position is wrong\n");
} else {
if (old_position < dma_frames) {
samples = SST_SAMPLES(runtime,
dma_frames - old_position);
snd_pcm_format_set_silence(runtime->format,
SST_OLD_POSITION(dma_area,
runtime, old_position),
samples);
} else
dev_err(rtd->dev, "PCM: dma_bytes is wrong\n");
if (position < dma_frames) {
samples = SST_SAMPLES(runtime, position);
snd_pcm_format_set_silence(runtime->format,
dma_area, samples);
} else
dev_err(rtd->dev, "PCM: position is wrong\n");
}
sst_hsw_stream_set_old_position(hsw, stream, position);
/* let alsa know we have play a period */
snd_pcm_period_elapsed(substream);
return pos;
}
static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
snd_pcm_uframes_t offset;
uint64_t ppos;
u32 position;
int dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
position = sst_hsw_get_dsp_position(hsw, pcm_data->stream);
offset = bytes_to_frames(runtime, position);
ppos = sst_hsw_get_dsp_presentation_position(hsw, pcm_data->stream);
dev_vdbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n",
position, ppos);
return offset;
}
static int hsw_pcm_open(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
int dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
mutex_lock(&pcm_data->mutex);
pm_runtime_get_sync(pdata->dev);
pcm_data->substream = substream;
snd_soc_set_runtime_hwparams(substream, &hsw_pcm_hardware);
pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
hsw_notify_pointer, pcm_data);
if (pcm_data->stream == NULL) {
dev_err(rtd->dev, "error: failed to create stream\n");
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return -EINVAL;
}
mutex_unlock(&pcm_data->mutex);
return 0;
}
static int hsw_pcm_close(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct hsw_priv_data *pdata =
snd_soc_platform_get_drvdata(rtd->platform);
struct hsw_pcm_data *pcm_data;
struct sst_hsw *hsw = pdata->hsw;
int ret, dai;
dai = mod_map[rtd->cpu_dai->id].dai_id;
pcm_data = &pdata->pcm[dai][substream->stream];
mutex_lock(&pcm_data->mutex);
ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
if (ret < 0) {
dev_dbg(rtd->dev, "error: reset stream failed %d\n", ret);
goto out;
}
ret = sst_hsw_stream_free(hsw, pcm_data->stream);
if (ret < 0) {
dev_dbg(rtd->dev, "error: free stream failed %d\n", ret);
goto out;
}
pcm_data->allocated = 0;
pcm_data->stream = NULL;
out:
pm_runtime_mark_last_busy(pdata->dev);
pm_runtime_put_autosuspend(pdata->dev);
mutex_unlock(&pcm_data->mutex);
return ret;
}
static const struct snd_pcm_ops hsw_pcm_ops = {
.open = hsw_pcm_open,
.close = hsw_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = hsw_pcm_hw_params,
.hw_free = hsw_pcm_hw_free,
.trigger = hsw_pcm_trigger,
.pointer = hsw_pcm_pointer,
.page = snd_pcm_sgbuf_ops_page,
};
static int hsw_pcm_create_modules(struct hsw_priv_data *pdata)
{
struct sst_hsw *hsw = pdata->hsw;
struct hsw_pcm_data *pcm_data;
int i;
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
/* create new runtime module, use same offset if recreated */
pcm_data->runtime = sst_hsw_runtime_module_create(hsw,
mod_map[i].mod_id, pcm_data->persistent_offset);
if (pcm_data->runtime == NULL)
goto err;
pcm_data->persistent_offset =
pcm_data->runtime->persistent_offset;
}
/* create runtime blocks for module waves */
if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES)) {
pdata->runtime_waves = sst_hsw_runtime_module_create(hsw,
SST_HSW_MODULE_WAVES, 0);
if (pdata->runtime_waves == NULL)
goto err;
}
return 0;
err:
for (--i; i >= 0; i--) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
sst_hsw_runtime_module_free(pcm_data->runtime);
}
return -ENODEV;
}
static void hsw_pcm_free_modules(struct hsw_priv_data *pdata)
{
struct sst_hsw *hsw = pdata->hsw;
struct hsw_pcm_data *pcm_data;
int i;
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (pcm_data->runtime){
sst_hsw_runtime_module_free(pcm_data->runtime);
pcm_data->runtime = NULL;
}
}
if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES) &&
pdata->runtime_waves) {
sst_hsw_runtime_module_free(pdata->runtime_waves);
pdata->runtime_waves = NULL;
}
}
static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
struct snd_soc_platform *platform = rtd->platform;
struct sst_pdata *pdata = dev_get_platdata(platform->dev);
struct hsw_priv_data *priv_data = dev_get_drvdata(platform->dev);
struct device *dev = pdata->dma_dev;
int ret = 0;
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_DEV_SG,
dev,
hsw_pcm_hardware.buffer_bytes_max,
hsw_pcm_hardware.buffer_bytes_max);
if (ret) {
dev_err(rtd->dev, "dma buffer allocation failed %d\n",
ret);
return ret;
}
}
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream)
priv_data->pcm[rtd->cpu_dai->id][SNDRV_PCM_STREAM_PLAYBACK].hsw_pcm = pcm;
if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream)
priv_data->pcm[rtd->cpu_dai->id][SNDRV_PCM_STREAM_CAPTURE].hsw_pcm = pcm;
return ret;
}
#define HSW_FORMATS \
(SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
static struct snd_soc_dai_driver hsw_dais[] = {
{
.name = "System Pin",
.id = HSW_PCM_DAI_ID_SYSTEM,
.playback = {
.stream_name = "System Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Analog Capture",
.channels_min = 2,
.channels_max = 4,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
},
},
{
/* PCM */
.name = "Offload0 Pin",
.id = HSW_PCM_DAI_ID_OFFLOAD0,
.playback = {
.stream_name = "Offload0 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = HSW_FORMATS,
},
},
{
/* PCM */
.name = "Offload1 Pin",
.id = HSW_PCM_DAI_ID_OFFLOAD1,
.playback = {
.stream_name = "Offload1 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = HSW_FORMATS,
},
},
{
.name = "Loopback Pin",
.id = HSW_PCM_DAI_ID_LOOPBACK,
.capture = {
.stream_name = "Loopback Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static const struct snd_soc_dapm_widget widgets[] = {
/* Backend DAIs */
SND_SOC_DAPM_AIF_IN("SSP0 CODEC IN", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("SSP0 CODEC OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_IN("SSP1 BT IN", NULL, 0, SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("SSP1 BT OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
/* Global Playback Mixer */
SND_SOC_DAPM_MIXER("Playback VMixer", SND_SOC_NOPM, 0, 0, NULL, 0),
};
static const struct snd_soc_dapm_route graph[] = {
/* Playback Mixer */
{"Playback VMixer", NULL, "System Playback"},
{"Playback VMixer", NULL, "Offload0 Playback"},
{"Playback VMixer", NULL, "Offload1 Playback"},
{"SSP0 CODEC OUT", NULL, "Playback VMixer"},
{"Analog Capture", NULL, "SSP0 CODEC IN"},
};
static int hsw_pcm_probe(struct snd_soc_platform *platform)
{
struct hsw_priv_data *priv_data = snd_soc_platform_get_drvdata(platform);
struct sst_pdata *pdata = dev_get_platdata(platform->dev);
struct device *dma_dev, *dev;
int i, ret = 0;
if (!pdata)
return -ENODEV;
dev = platform->dev;
dma_dev = pdata->dma_dev;
priv_data->hsw = pdata->dsp;
priv_data->dev = platform->dev;
priv_data->pm_state = HSW_PM_STATE_D0;
priv_data->soc_card = platform->component.card;
/* allocate DSP buffer page tables */
for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
/* playback */
if (hsw_dais[i].playback.channels_min) {
mutex_init(&priv_data->pcm[i][SNDRV_PCM_STREAM_PLAYBACK].mutex);
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
PAGE_SIZE, &priv_data->dmab[i][0]);
if (ret < 0)
goto err;
}
/* capture */
if (hsw_dais[i].capture.channels_min) {
mutex_init(&priv_data->pcm[i][SNDRV_PCM_STREAM_CAPTURE].mutex);
ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
PAGE_SIZE, &priv_data->dmab[i][1]);
if (ret < 0)
goto err;
}
}
/* allocate runtime modules */
ret = hsw_pcm_create_modules(priv_data);
if (ret < 0)
goto err;
/* enable runtime PM with auto suspend */
pm_runtime_set_autosuspend_delay(platform->dev,
SST_RUNTIME_SUSPEND_DELAY);
pm_runtime_use_autosuspend(platform->dev);
pm_runtime_enable(platform->dev);
pm_runtime_idle(platform->dev);
return 0;
err:
for (--i; i >= 0; i--) {
if (hsw_dais[i].playback.channels_min)
snd_dma_free_pages(&priv_data->dmab[i][0]);
if (hsw_dais[i].capture.channels_min)
snd_dma_free_pages(&priv_data->dmab[i][1]);
}
return ret;
}
static int hsw_pcm_remove(struct snd_soc_platform *platform)
{
struct hsw_priv_data *priv_data =
snd_soc_platform_get_drvdata(platform);
int i;
pm_runtime_disable(platform->dev);
hsw_pcm_free_modules(priv_data);
for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
if (hsw_dais[i].playback.channels_min)
snd_dma_free_pages(&priv_data->dmab[i][0]);
if (hsw_dais[i].capture.channels_min)
snd_dma_free_pages(&priv_data->dmab[i][1]);
}
return 0;
}
static const struct snd_soc_platform_driver hsw_soc_platform = {
.probe = hsw_pcm_probe,
.remove = hsw_pcm_remove,
.ops = &hsw_pcm_ops,
.pcm_new = hsw_pcm_new,
};
static const struct snd_soc_component_driver hsw_dai_component = {
.name = "haswell-dai",
.controls = hsw_volume_controls,
.num_controls = ARRAY_SIZE(hsw_volume_controls),
.dapm_widgets = widgets,
.num_dapm_widgets = ARRAY_SIZE(widgets),
.dapm_routes = graph,
.num_dapm_routes = ARRAY_SIZE(graph),
};
static int hsw_pcm_dev_probe(struct platform_device *pdev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
struct hsw_priv_data *priv_data;
int ret;
if (!sst_pdata)
return -EINVAL;
priv_data = devm_kzalloc(&pdev->dev, sizeof(*priv_data), GFP_KERNEL);
if (!priv_data)
return -ENOMEM;
ret = sst_hsw_dsp_init(&pdev->dev, sst_pdata);
if (ret < 0)
return -ENODEV;
priv_data->hsw = sst_pdata->dsp;
platform_set_drvdata(pdev, priv_data);
ret = snd_soc_register_platform(&pdev->dev, &hsw_soc_platform);
if (ret < 0)
goto err_plat;
ret = snd_soc_register_component(&pdev->dev, &hsw_dai_component,
hsw_dais, ARRAY_SIZE(hsw_dais));
if (ret < 0)
goto err_comp;
return 0;
err_comp:
snd_soc_unregister_platform(&pdev->dev);
err_plat:
sst_hsw_dsp_free(&pdev->dev, sst_pdata);
return 0;
}
static int hsw_pcm_dev_remove(struct platform_device *pdev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
snd_soc_unregister_platform(&pdev->dev);
snd_soc_unregister_component(&pdev->dev);
sst_hsw_dsp_free(&pdev->dev, sst_pdata);
return 0;
}
#ifdef CONFIG_PM
static int hsw_pcm_runtime_idle(struct device *dev)
{
return 0;
}
static int hsw_pcm_suspend(struct device *dev)
{
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct sst_hsw *hsw = pdata->hsw;
/* enter D3 state and stall */
sst_hsw_dsp_runtime_suspend(hsw);
/* free all runtime modules */
hsw_pcm_free_modules(pdata);
/* put the DSP to sleep, fw unloaded after runtime modules freed */
sst_hsw_dsp_runtime_sleep(hsw);
return 0;
}
static int hsw_pcm_runtime_suspend(struct device *dev)
{
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct sst_hsw *hsw = pdata->hsw;
int ret;
if (pdata->pm_state >= HSW_PM_STATE_RTD3)
return 0;
/* fw modules will be unloaded on RTD3, set flag to track */
if (sst_hsw_is_module_active(hsw, SST_HSW_MODULE_WAVES)) {
ret = sst_hsw_module_disable(hsw, SST_HSW_MODULE_WAVES, 0);
if (ret < 0)
return ret;
sst_hsw_set_module_enabled_rtd3(hsw, SST_HSW_MODULE_WAVES);
}
hsw_pcm_suspend(dev);
pdata->pm_state = HSW_PM_STATE_RTD3;
return 0;
}
static int hsw_pcm_runtime_resume(struct device *dev)
{
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct sst_hsw *hsw = pdata->hsw;
int ret;
if (pdata->pm_state != HSW_PM_STATE_RTD3)
return 0;
ret = sst_hsw_dsp_load(hsw);
if (ret < 0) {
dev_err(dev, "failed to reload %d\n", ret);
return ret;
}
ret = hsw_pcm_create_modules(pdata);
if (ret < 0) {
dev_err(dev, "failed to create modules %d\n", ret);
return ret;
}
ret = sst_hsw_dsp_runtime_resume(hsw);
if (ret < 0)
return ret;
else if (ret == 1) /* no action required */
return 0;
/* check flag when resume */
if (sst_hsw_is_module_enabled_rtd3(hsw, SST_HSW_MODULE_WAVES)) {
ret = sst_hsw_module_enable(hsw, SST_HSW_MODULE_WAVES, 0);
if (ret < 0)
return ret;
/* put parameters from buffer to dsp */
ret = sst_hsw_launch_param_buf(hsw);
if (ret < 0)
return ret;
/* unset flag */
sst_hsw_set_module_disabled_rtd3(hsw, SST_HSW_MODULE_WAVES);
}
pdata->pm_state = HSW_PM_STATE_D0;
return ret;
}
#else
#define hsw_pcm_runtime_idle NULL
#define hsw_pcm_runtime_suspend NULL
#define hsw_pcm_runtime_resume NULL
#endif
#ifdef CONFIG_PM
static void hsw_pcm_complete(struct device *dev)
{
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct sst_hsw *hsw = pdata->hsw;
struct hsw_pcm_data *pcm_data;
int i, err;
if (pdata->pm_state != HSW_PM_STATE_D3)
return;
err = sst_hsw_dsp_load(hsw);
if (err < 0) {
dev_err(dev, "failed to reload %d\n", err);
return;
}
err = hsw_pcm_create_modules(pdata);
if (err < 0) {
dev_err(dev, "failed to create modules %d\n", err);
return;
}
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
err = sst_module_runtime_restore(pcm_data->runtime,
&pcm_data->context);
if (err < 0)
dev_err(dev, "failed to restore context for PCM %d\n", i);
}
snd_soc_resume(pdata->soc_card->dev);
err = sst_hsw_dsp_runtime_resume(hsw);
if (err < 0)
return;
else if (err == 1) /* no action required */
return;
pdata->pm_state = HSW_PM_STATE_D0;
return;
}
static int hsw_pcm_prepare(struct device *dev)
{
struct hsw_priv_data *pdata = dev_get_drvdata(dev);
struct hsw_pcm_data *pcm_data;
int i, err;
if (pdata->pm_state == HSW_PM_STATE_D3)
return 0;
else if (pdata->pm_state == HSW_PM_STATE_D0) {
/* suspend all active streams */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
dev_dbg(dev, "suspending pcm %d\n", i);
snd_pcm_suspend_all(pcm_data->hsw_pcm);
/* We need to wait until the DSP FW stops the streams */
msleep(2);
}
/* preserve persistent memory */
for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
if (!pcm_data->substream)
continue;
dev_dbg(dev, "saving context pcm %d\n", i);
err = sst_module_runtime_save(pcm_data->runtime,
&pcm_data->context);
if (err < 0)
dev_err(dev, "failed to save context for PCM %d\n", i);
}
hsw_pcm_suspend(dev);
}
snd_soc_suspend(pdata->soc_card->dev);
snd_soc_poweroff(pdata->soc_card->dev);
pdata->pm_state = HSW_PM_STATE_D3;
return 0;
}
#else
#define hsw_pcm_prepare NULL
#define hsw_pcm_complete NULL
#endif
static const struct dev_pm_ops hsw_pcm_pm = {
.runtime_idle = hsw_pcm_runtime_idle,
.runtime_suspend = hsw_pcm_runtime_suspend,
.runtime_resume = hsw_pcm_runtime_resume,
.prepare = hsw_pcm_prepare,
.complete = hsw_pcm_complete,
};
static struct platform_driver hsw_pcm_driver = {
.driver = {
.name = "haswell-pcm-audio",
.pm = &hsw_pcm_pm,
},
.probe = hsw_pcm_dev_probe,
.remove = hsw_pcm_dev_remove,
};
module_platform_driver(hsw_pcm_driver);
MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
MODULE_DESCRIPTION("Haswell/Lynxpoint + Broadwell/Wildcatpoint PCM");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:haswell-pcm-audio");