1 files changed, 29 insertions, 2 deletions

diff --git a/sound/soc/intel/sst-haswell-ipc.c b/sound/soc/intel/sst-haswell-ipc.c
index 50e4246d4b57..e7996b39a484 100644
--- a/sound/soc/intel/sst-haswell-ipc.c
+++ b/sound/soc/intel/sst-haswell-ipc.c
@@ -1159,11 +1159,14 @@ struct sst_hsw_stream *sst_hsw_stream_new(struct sst_hsw *hsw, int id,
         void *data)
 {
         struct sst_hsw_stream *stream;
+        struct sst_dsp *sst = hsw->dsp;
+        unsigned long flags;
 
         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
         if (stream == NULL)
                 return NULL;
 
+        spin_lock_irqsave(&sst->spinlock, flags);
         list_add(&stream->node, &hsw->stream_list);
         stream->notify_position = notify_position;
         stream->pdata = data;
@@ -1172,6 +1175,7 @@ struct sst_hsw_stream *sst_hsw_stream_new(struct sst_hsw *hsw, int id,
 
         /* work to process notification messages */
         INIT_WORK(&stream->notify_work, hsw_notification_work);
+        spin_unlock_irqrestore(&sst->spinlock, flags);
 
         return stream;
 }
@@ -1180,6 +1184,8 @@ int sst_hsw_stream_free(struct sst_hsw *hsw, struct sst_hsw_stream *stream)
 {
         u32 header;
         int ret = 0;
+        struct sst_dsp *sst = hsw->dsp;
+        unsigned long flags;
 
         /* dont free DSP streams that are not commited */
         if (!stream->commited)
@@ -1201,8 +1207,11 @@ int sst_hsw_stream_free(struct sst_hsw *hsw, struct sst_hsw_stream *stream)
         trace_hsw_stream_free_req(stream, &stream->free_req);
 
 out:
+        cancel_work_sync(&stream->notify_work);
+        spin_lock_irqsave(&sst->spinlock, flags);
         list_del(&stream->node);
         kfree(stream);
+        spin_unlock_irqrestore(&sst->spinlock, flags);
 
         return ret;
 }
@@ -1538,10 +1547,28 @@ int sst_hsw_stream_reset(struct sst_hsw *hsw, struct sst_hsw_stream *stream)
 }
 
 /* Stream pointer positions */
-int sst_hsw_get_dsp_position(struct sst_hsw *hsw,
+u32 sst_hsw_get_dsp_position(struct sst_hsw *hsw,
         struct sst_hsw_stream *stream)
 {
-        return stream->rpos.position;
+        u32 rpos;
+
+        sst_dsp_read(hsw->dsp, &rpos,
+                stream->reply.read_position_register_address, sizeof(rpos));
+
+        return rpos;
+}
+
+/* Stream presentation (monotonic) positions */
+u64 sst_hsw_get_dsp_presentation_position(struct sst_hsw *hsw,
+        struct sst_hsw_stream *stream)
+{
+        u64 ppos;
+
+        sst_dsp_read(hsw->dsp, &ppos,
+                stream->reply.presentation_position_register_address,
+                sizeof(ppos));
+
+        return ppos;
 }
 
 int sst_hsw_stream_set_write_position(struct sst_hsw *hsw,