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Date: Sun, 18 Feb 2018 23:01:43 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Mark Brown <broonie@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>
Cc: Hans de Goede <hdegoede@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 6/9] ASoC: Intel: sst: Free streams on suspend, re-alloc on resume
The Bay Trail SST-DSP firmware version looses track of all streams over a
suspend/resume, failing any attempts to resume and/or free streams, with
a SST_ERR_INVALID_STREAM_ID error.
This commit adds support for free-ing the streams on suspend and
re-allocating them on resume, fixing suspend/resume issues on devices
using this firmware version.
This new behavior gets triggered by a new flag in sst_platform_info which
only gets set on Bay Trail platforms.
This has been tested on the following devices:
-Asus T100TA, Bay Trail + ALC5642 codec
-Ployer MOMO7W, Bay Trail CR + ALC5652 codec
Tested-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
arch/x86/include/asm/platform_sst_audio.h | 1 +
sound/soc/intel/atom/sst/sst.c | 24 +++++++++++++++++++++++-
sound/soc/intel/atom/sst/sst.h | 4 ++++
sound/soc/intel/atom/sst/sst_acpi.c | 3 ++-
sound/soc/intel/atom/sst/sst_stream.c | 24 +++++++++++++++++++++++-
5 files changed, 53 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/platform_sst_audio.h b/arch/x86/include/asm/platform_sst_audio.h
index 5973a2f3db3d..059823bb8af7 100644
--- a/arch/x86/include/asm/platform_sst_audio.h
+++ b/arch/x86/include/asm/platform_sst_audio.h
@@ -135,6 +135,7 @@ struct sst_platform_info {
const struct sst_res_info *res_info;
const struct sst_lib_dnld_info *lib_info;
const char *platform;
+ bool streams_lost_on_suspend;
};
int add_sst_platform_device(void);
#endif
diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c
index 8afdff457579..0962bc9adc62 100644
--- a/sound/soc/intel/atom/sst/sst.c
+++ b/sound/soc/intel/atom/sst/sst.c
@@ -449,6 +449,13 @@ static int intel_sst_suspend(struct device *dev)
dev_err(dev, "stream %d is running, can't suspend, abort\n", i);
return -EBUSY;
}
+
+ if (ctx->pdata->streams_lost_on_suspend) {
+ stream->resume_status = stream->status;
+ stream->resume_prev = stream->prev;
+ if (stream->status != STREAM_UN_INIT)
+ sst_free_stream(ctx, i);
+ }
}
synchronize_irq(ctx->irq_num);
flush_workqueue(ctx->post_msg_wq);
@@ -509,8 +516,8 @@ static int intel_sst_resume(struct device *dev)
{
struct intel_sst_drv *ctx = dev_get_drvdata(dev);
struct sst_fw_save *fw_save = ctx->fw_save;
- int ret = 0;
struct sst_block *block;
+ int i, ret = 0;
if (!fw_save)
return 0;
@@ -550,6 +557,21 @@ static int intel_sst_resume(struct device *dev)
sst_set_fw_state_locked(ctx, SST_FW_RUNNING);
}
+ if (ctx->pdata->streams_lost_on_suspend) {
+ for (i = 1; i <= ctx->info.max_streams; i++) {
+ struct stream_info *stream = &ctx->streams[i];
+
+ if (stream->resume_status != STREAM_UN_INIT) {
+ dev_dbg(ctx->dev, "Re-allocing stream %d status %d prev %d\n",
+ i, stream->resume_status,
+ stream->resume_prev);
+ sst_realloc_stream(ctx, i);
+ stream->status = stream->resume_status;
+ stream->prev = stream->resume_prev;
+ }
+ }
+ }
+
sst_free_block(ctx, block);
return ret;
}
diff --git a/sound/soc/intel/atom/sst/sst.h b/sound/soc/intel/atom/sst/sst.h
index a357cd615b59..b2a705dc9304 100644
--- a/sound/soc/intel/atom/sst/sst.h
+++ b/sound/soc/intel/atom/sst/sst.h
@@ -179,6 +179,8 @@ struct sst_block {
*
* @status : stream current state
* @prev : stream prev state
+ * @resume_status : stream current state to restore on resume
+ * @resume_prev : stream prev state to restore on resume
* @lock : stream mutex for protecting state
* @alloc_param : parameters used for stream (re-)allocation
* @pcm_substream : PCM substream
@@ -189,6 +191,8 @@ struct sst_block {
struct stream_info {
unsigned int status;
unsigned int prev;
+ unsigned int resume_status;
+ unsigned int resume_prev;
struct mutex lock;
struct snd_sst_alloc_mrfld alloc_param;
diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c
index 6cd481bec275..c90b04cc071d 100644
--- a/sound/soc/intel/atom/sst/sst_acpi.c
+++ b/sound/soc/intel/atom/sst/sst_acpi.c
@@ -143,10 +143,11 @@ static struct sst_platform_info byt_rvp_platform_data = {
.lib_info = &byt_lib_dnld_info,
.res_info = &byt_rvp_res_info,
.platform = "sst-mfld-platform",
+ .streams_lost_on_suspend = true,
};
/* Cherryview (Cherrytrail and Braswell) uses same mrfld dpcm fw as Baytrail,
- * so pdata is same as Baytrail.
+ * so pdata is same as Baytrail, minus the streams_lost_on_suspend quirk.
*/
static struct sst_platform_info chv_platform_data = {
.probe_data = &byt_fwparse_info,
diff --git a/sound/soc/intel/atom/sst/sst_stream.c b/sound/soc/intel/atom/sst/sst_stream.c
index fcedaa237505..107271f7dd63 100644
--- a/sound/soc/intel/atom/sst/sst_stream.c
+++ b/sound/soc/intel/atom/sst/sst_stream.c
@@ -302,7 +302,29 @@ int sst_resume_stream(struct intel_sst_drv *sst_drv_ctx, int str_id)
return -EINVAL;
if (str_info->status == STREAM_RUNNING)
return 0;
- if (str_info->status == STREAM_PAUSED) {
+
+ if (str_info->resume_status == STREAM_PAUSED &&
+ str_info->resume_prev == STREAM_RUNNING) {
+ /*
+ * Stream was running before suspend and re-created on resume,
+ * start it to get back to running state.
+ */
+ dev_dbg(sst_drv_ctx->dev, "restart recreated stream after resume\n");
+ str_info->status = STREAM_RUNNING;
+ str_info->prev = STREAM_PAUSED;
+ retval = sst_start_stream(sst_drv_ctx, str_id);
+ str_info->resume_status = STREAM_UN_INIT;
+ } else if (str_info->resume_status == STREAM_PAUSED &&
+ str_info->resume_prev == STREAM_INIT) {
+ /*
+ * Stream was idle before suspend and re-created on resume,
+ * keep it as is.
+ */
+ dev_dbg(sst_drv_ctx->dev, "leaving recreated stream idle after resume\n");
+ str_info->status = STREAM_INIT;
+ str_info->prev = STREAM_PAUSED;
+ str_info->resume_status = STREAM_UN_INIT;
+ } else if (str_info->status == STREAM_PAUSED) {
retval = sst_prepare_and_post_msg(sst_drv_ctx, str_info->task_id,
IPC_CMD, IPC_IA_RESUME_STREAM_MRFLD,
str_info->pipe_id, 0, NULL, NULL,
--
2.14.3
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