#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>
#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
+#define HSW_PCM_DAI_ID_CAPTURE 4
+
+
static const struct snd_pcm_hardware hsw_pcm_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
.buffer_bytes_max = HSW_PCM_PERIODS_MAX * PAGE_SIZE,
};
+struct hsw_pcm_module_map {
+ int dai_id;
+ 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_D3 = 0,
+ HSW_PM_STATE_D0 = 1,
};
/* 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;
/* page tables */
struct snd_dma_buffer dmab[HSW_PCM_COUNT][2];
static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
- struct hsw_priv_data *pdata = snd_soc_component_get_drvdata(cmpnt);
+ 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 = &pdata->pcm[mc->reg];
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
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]);
- sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 2, volume);
+ /* 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);
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_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
- struct hsw_priv_data *pdata = snd_soc_component_get_drvdata(cmpnt);
+ 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 = &pdata->pcm[mc->reg];
struct sst_hsw *hsw = pdata->hsw;
u32 volume;
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;
}
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_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
- struct hsw_priv_data *pdata = snd_soc_component_get_drvdata(cmpnt);
+ 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, 2, volume);
+ 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, 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_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
- struct hsw_priv_data *pdata = snd_soc_component_get_drvdata(cmpnt);
+ 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 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,
+ 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), 0,
+ 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), 0,
- hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
- /* Loopback volume */
- SOC_DOUBLE_EXT_TLV("Loopback Capture Volume", 3, 0, 8,
- ARRAY_SIZE(volume_map), 0,
+ 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), 0,
+ SOC_DOUBLE_EXT_TLV("Mic Capture Volume", 0, 0, 8,
+ ARRAY_SIZE(volume_map) - 1, 0,
hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
};
/* DSP stream type depends on DAI ID */
switch (rtd->cpu_dai->id) {
case 0:
- stream_type = SST_HSW_STREAM_TYPE_SYSTEM;
- module_id = SST_HSW_MODULE_PCM_SYSTEM;
+ 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:
path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
module_id = SST_HSW_MODULE_PCM_REFERENCE;
break;
- case 4:
- stream_type = SST_HSW_STREAM_TYPE_CAPTURE;
- module_id = SST_HSW_MODULE_PCM_CAPTURE;
- break;
default:
dev_err(rtd->dev, "error: invalid DAI ID %d\n",
rtd->cpu_dai->id);
return ret;
}
- /* we only support stereo atm */
channels = params_channels(params);
- if (channels != 2) {
- dev_err(rtd->dev, "error: invalid channels %d\n", channels);
- return -EINVAL;
- }
-
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);
return -EINVAL;
}
- /* we use hardcoded memory offsets atm, will be updated for new FW */
- if (stream_type == SST_HSW_STREAM_TYPE_CAPTURE) {
- sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
- SST_HSW_MODULE_PCM_CAPTURE, module_data->entry);
- sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
- 0x449400, 0x4000);
- sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
- 0x400000, 0);
- } else { /* stream_type == SST_HSW_STREAM_TYPE_SYSTEM */
- sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
- SST_HSW_MODULE_PCM_SYSTEM, module_data->entry);
-
- sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
- module_data->offset, module_data->size);
- sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
- 0x44d400, 0x3800);
-
- sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
- module_data->offset, module_data->size);
- sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
- 0x400000, 0);
- }
+ 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;
}
- pcm_data->allocated = true;
+
+ 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)
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr % runtime->buffer_size));
- dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
+ dev_vdbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
/* let alsa know we have play a period */
snd_pcm_period_elapsed(substream);
offset = bytes_to_frames(runtime, position);
ppos = sst_hsw_get_dsp_presentation_position(hsw, pcm_data->stream);
- dev_dbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n",
+ dev_vdbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n",
position, ppos);
return offset;
}
pcm_data = &pdata->pcm[rtd->cpu_dai->id];
mutex_lock(&pcm_data->mutex);
+ pm_runtime_get_sync(pdata->dev);
snd_soc_pcm_set_drvdata(rtd, pcm_data);
pcm_data->substream = substream;
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;
}
- /* 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]);
-
mutex_unlock(&pcm_data->mutex);
return 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;
}
.page = snd_pcm_sgbuf_ops_page,
};
+/* static mappings between PCMs and modules - may be dynamic in future */
+static struct hsw_pcm_module_map mod_map[] = {
+ {HSW_PCM_DAI_ID_SYSTEM, SST_HSW_MODULE_PCM_SYSTEM},
+ {HSW_PCM_DAI_ID_OFFLOAD0, SST_HSW_MODULE_PCM},
+ {HSW_PCM_DAI_ID_OFFLOAD1, SST_HSW_MODULE_PCM},
+ {HSW_PCM_DAI_ID_LOOPBACK, SST_HSW_MODULE_PCM_REFERENCE},
+ {HSW_PCM_DAI_ID_CAPTURE, SST_HSW_MODULE_PCM_CAPTURE},
+};
+
+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[i];
+
+ /* 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;
+ }
+
+ return 0;
+
+err:
+ for (--i; i >= 0; i--) {
+ pcm_data = &pdata->pcm[i];
+ sst_hsw_runtime_module_free(pcm_data->runtime);
+ }
+
+ return -ENODEV;
+}
+
+static void hsw_pcm_free_modules(struct hsw_priv_data *pdata)
+{
+ struct hsw_pcm_data *pcm_data;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
+ pcm_data = &pdata->pcm[i];
+
+ sst_hsw_runtime_module_free(pcm_data->runtime);
+ }
+}
+
static void hsw_pcm_free(struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_free_for_all(pcm);
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;
return ret;
}
}
+ priv_data->pcm[rtd->cpu_dai->id].hsw_pcm = pcm;
return ret;
}
#define HSW_FORMATS \
- (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE | \
- SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE |\
- SNDRV_PCM_FMTBIT_S8)
+ (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,
.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,
{
/* PCM */
.name = "Offload1 Pin",
+ .id = HSW_PCM_DAI_ID_OFFLOAD1,
.playback = {
.stream_name = "Offload1 Playback",
.channels_min = 2,
},
{
.name = "Loopback Pin",
+ .id = HSW_PCM_DAI_ID_LOOPBACK,
.capture = {
.stream_name = "Loopback Capture",
.channels_min = 2,
.formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
},
},
- {
- .name = "Capture Pin",
- .capture = {
- .stream_name = "Analog 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[] = {
{
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 = pdata->dma_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++) {
}
}
+ /* allocate runtime modules */
+ hsw_pcm_create_modules(priv_data);
+
+ /* 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:
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]);
return 0;
}
+#ifdef CONFIG_PM_RUNTIME
+
+static int hsw_pcm_runtime_idle(struct device *dev)
+{
+ 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;
+
+ if (pdata->pm_state == HSW_PM_STATE_D3)
+ return 0;
+
+ sst_hsw_dsp_runtime_suspend(hsw);
+ sst_hsw_dsp_runtime_sleep(hsw);
+ pdata->pm_state = HSW_PM_STATE_D3;
+
+ 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_D0)
+ 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;
+
+ 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
+
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PM_RUNTIME)
+
+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_D0)
+ 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 < HSW_PCM_DAI_ID_CAPTURE + 1; i++) {
+ pcm_data = &pdata->pcm[i];
+
+ 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 sst_hsw *hsw = pdata->hsw;
+ struct hsw_pcm_data *pcm_data;
+ int i, err;
+
+ if (pdata->pm_state == HSW_PM_STATE_D3)
+ return 0;
+ /* suspend all active streams */
+ for (i = 0; i < HSW_PCM_DAI_ID_CAPTURE + 1; i++) {
+ pcm_data = &pdata->pcm[i];
+
+ 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);
+ }
+
+ snd_soc_suspend(pdata->soc_card->dev);
+ snd_soc_poweroff(pdata->soc_card->dev);
+
+ /* enter D3 state and stall */
+ sst_hsw_dsp_runtime_suspend(hsw);
+
+ /* preserve persistent memory */
+ for (i = 0; i < HSW_PCM_DAI_ID_CAPTURE + 1; i++) {
+ pcm_data = &pdata->pcm[i];
+
+ 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);
+ }
+
+ /* put the DSP to sleep */
+ sst_hsw_dsp_runtime_sleep(hsw);
+ 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",
.owner = THIS_MODULE,
+ .pm = &hsw_pcm_pm,
+
},
.probe = hsw_pcm_dev_probe,
git.openpandora.org / pandora-kernel.git / blobdiff