[hack] add more traces to stream.c

Signed-off-by: Pierre-Louis Bossart <[email protected]>

drivers/soundwire/stream.c

@@ -1390,18 +1390,27 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream,
  struct sdw_bus_params params;
  int ret;
 
- if (stream->type == SDW_STREAM_BPT) {
- ret = sdw_bpt_program_ports(bus);
- if (ret < 0) {
- dev_err(bus->dev, "BPT program params failed: %d\n", ret);
- return ret;
- }
- goto skip_params;
- }
+ pr_info("%s: start\n", __func__);
 
  /* Prepare Master(s) and Slave(s) port(s) associated with stream */
  list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+
+ pr_info("%s: 1\n", __func__);
  bus = m_rt->bus;
+ if (stream->type == SDW_STREAM_BPT) {
+ pr_info("%s: 2\n", __func__);
+ ret = sdw_bpt_program_ports(bus);
+ pr_info("%s: 3\n", __func__);
+ if (ret < 0) {
+ dev_err(bus->dev, "BPT program params failed: %d\n", ret);
+ return ret;
+ }
+ pr_info("%s: 4\n", __func__);
+ goto skip_params;
+ }
+
+ pr_info("%s: 5\n", __func__);
+
  prop = &bus->prop;
  memcpy(&params, &bus->params, sizeof(params));
 
@@ -1438,13 +1447,18 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream,
  }
 
 skip_params:
+ dev_info(bus->dev, "%s: before do_bank_switch\n", __func__);
  ret = do_bank_switch(stream);
+ dev_info(bus->dev, "%s: after do_bank_switch\n", __func__);
  if (ret < 0) {
  pr_err("%s: do_bank_switch failed: %d\n", __func__, ret);
  goto restore_params;
  }
 
  list_for_each_entry(m_rt, &stream->master_list, stream_node) {
+
+ dev_info(bus->dev, "%s: list_start\n", __func__);
+
  bus = m_rt->bus;
 
  /* Prepare port(s) on the new clock configuration */
@@ -1454,6 +1468,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream,
  ret);
  return ret;
  }
+ dev_info(bus->dev, "%s: adter sdw_prep_deprep_ports\n", __func__);
  }
 
  stream->state = SDW_STREAM_PREPARED;
@@ -1482,13 +1497,16 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)
  return -EINVAL;
  }
 
+ pr_info("%s: start\n", __func__);
  sdw_acquire_bus_lock(stream);
 
+ pr_info("%s: 1\n", __func__);
  if (stream->state == SDW_STREAM_PREPARED) {
  ret = 0;
  goto state_err;
  }
 
+ pr_info("%s: 2\n", __func__);
  if (stream->state != SDW_STREAM_CONFIGURED &&
  stream->state != SDW_STREAM_DEPREPARED &&
  stream->state != SDW_STREAM_DISABLED) {
@@ -1498,6 +1516,8 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)
  goto state_err;
  }
 
+ pr_info("%s: 3\n", __func__);
+
  /*
  * when the stream is DISABLED, this means sdw_prepare_stream()
  * is called as a result of an underflow or a resume operation.
@@ -1507,10 +1527,15 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream)
  if (stream->state == SDW_STREAM_DISABLED)
  update_params = false;
 
+ pr_info("%s: 4\n", __func__);
+
  ret = _sdw_prepare_stream(stream, update_params);
 
+ pr_info("%s: 5\n", __func__);
 state_err:
  sdw_release_bus_lock(stream);
+
+ pr_info("%s: done\n", __func__);
  return ret;
 }
 EXPORT_SYMBOL(sdw_prepare_stream);